Answer:
-21
It is explained as in the file attached above.
Hope It Helps.
Answer:
-21
Step-by-step explanation:
-5p² - 8p
Let p = -3
Evaluate the expression
-5 ( -3) ^2 - 8(-3)
-5 ( 9) +24
-45 + 24
-21
14. Corin measures the apparent height of a tower 800 feet away by holding a ruler in front of her and observing that the tower appears to be 9 inches tall. The apparent height h eye (in inches) varies inversely with Corin's distance d (in feet) from the tower. Write an equation that gives d as a function of h. How tall would the apparent height of the tower be if she was standing 2000 feet away from the tower? Show your work.
The equation that gives d as a function of h is d = 7200/h
The apparent height of the tower would be 3.6 inches
How to write an equation that gives d as a function of h.From the question, we have the following parameters that can be used in our computation:
Apparent height (h) = 800 feet
Distance (d) = 9 inches
Variation = inverse variation
The inverse variation implies that
k = dh
Where k is the constant of variation
Substitute the known values in the above equation, so, we have the following representation
k = 800 * 9
k = 7200
So, we have
7200 = dh
Make d the subject
d = 7200/h
How tall would the apparent height of the tower beHere, we have
She was standing 2000 feet away from the tower
This means that
d = 2000
So, we have
2000 = 7200/h
Make h the subject
h = 7200/2000
Evaluate
h = 3.6
This means that the height is 3.6 inches
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A school is planning a car wash to raise $540.
• There will be 6 teams.
• Each team will wash 3 cars per hour.
• The car wash will last 6-½ hours.
• Each team will take two 15-minute breaks. How much should the school charge per car to raise exactly $540?
The car wash made $600 since "there will be 8 teams" meaning 8 * $75.
Find the solution?The length of the car wash will be five and a half hours, with two 15-minute breaks for each team.
Thus, each team works for five hours.
Two automobiles will be washed per hour by each team.
Ten vehicles per squad, then.
[5*2]
Given that "there will be 8 teams," 80 vehicles will be washed (assumed to be in a continuous line of vehicles) [10*8].
The charge must be $600/80=$7.50 each car in order to make $600.
Check (extremely important): "each crew will wash two cars per hour," meaning that each team will earn $15 per hour; "the car wash will run five and a half hours," and "each team will take two 15-minute breaks." As a result, five times $15 equals $75 earned each team.
The car wash made $600 since "there will be 8 teams" meaning 8 * $75.
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The students in Mrs. Smith's art classes all drew portraits of
Martin Luther King. Mrs. Smith hung all of the pictures in
the school cafeteria. She put 104 portraits on each of the
cafeteria walls. How many portraits were there in all?
mrk and tabel your answer.
Answer:
Step-by-step explanation:
104 x 4 = 416
Let F be a differentiable function such that f(-2) = -10 and f'(-2)= -5. What is the approximation for f(−2.2) found by using the line tangent to the graph of F at x= -2?
The approximation for f(−2.2) found by using the line tangent to the graph of F at x= -2 is f(-2.2) = 11
What is linear approximation?Linear approximation is the procedure of using derivatives to find the value of a function.
How to find the approximation for f(-2.2)?Given that F be a differentiable function such that f(-2) = -10 and f'(-2)= -5, and we desire f(2.2). The linear approximation is given as
f(x + Δx) = f(x) + f'(x)Δx
Since we require f(-2.2) = f(-2 - 0.2).
So,
x = -2 and Δx = -0.2So, substituting these into the equation, we have
f(-2 - 0.2) = f(-2) + f'(-2)(-0.2)
Given that
f(-2) = -10, and f'(-2) = 5Substituting the values of the variables into the equation, we have that
f(-2 - 0.2) = f(-2) + f'(-2)(-0.2)
f(-2 - 0.2) = -10 + (5)(-0.2)
f(-2 - 0.2) = -10 - 1
f(-2.2) = -11
So, the approximation of f(-2.2) = -11
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Twenty tiles are numbered 1 through 20 and are placed into box . Twenty other tiles numbered 11 through 30 are placed into box . One tile is randomly drawn from each box. What is the probability that the tile from box is less than 15 and the tile from box is either even or greater than 25
P(both are greater than 15) is 3/16. The first tile is odd and the second tile is less than 25 is 7/20. The first tile is a multiple of 6 and the second tile is a multiple of 4 is 3/80 and The first tile is less than 15 and the second tile is even or greater than 25 is 21/50.
Given that,
Total number of outcomes = 20
1. P(both are greater than 15) = (5/20) (15/20) = (1/4) (3/4) = 3/16
2. The first tile is odd and the second tile is less than 25
so, (10/20) (14/20) = (1/2) (7/10) = 7/20
3. The first tile is a multiple of 6 and the second tile is a multiple of 4
so, (3/20) ( 5/20) = (3/20) (1/4) = 3/80
4. The first tile is less than 15 and the second tile is even or greater than 25
So, Number ( even or > 25) = Number(even) + Number (.>25) - Number (even and > 25) = 10+5-3 = 12
Thus, (14/20) ( 12/20) = (7/10) (3/5) = 21 / 50
Complete question:
Tiles numbered 1 through 20 are placed in a box. Tiles numbered 11 through 30 are placed in a second box. The first tile is randomly drawn from the first box. The second tile is randomly drawn from the second box. Find each probability.
1. P(both are greater than 15)
2. The first tile is odd and the second tile is less than 25.
3. The first tile is a multiple of 6 and the second tile is a multiple of 4.
4. The first tile is less than 15 and the second tile is even or greater than 25.
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A movie theater charges $8.50 for an adult ticket to an evening showing of a popular movie. To help the local animal shelter, the theater management has agreed to reduce the price of each adult ticket by $0.50 for every can of pet food a customer contributes to a collection barrel in the theater lobby. Which of the following shows both an equation in which y represents the cost of an adult ticket in dollars for a customer who contributes x cans of pet food, and the graph of the cost if a customer brings in 2, 5, 8, or 10 cans of pet food?
A. y=8.5-0.50x
B. y=9x-0.5
C. y=8.5+0.50x
D. y=-9x-0.5
Answer:
Step-by-step explanation:
The answer is d
Determine the nature of the quartratic form into conancial form by x² 2y² 3z² 2xy 2yz-2zx
So the equation x² + 2y² + 3z² + 2xy + 2yz - 2zx can be put into canonical form, (x + y + z)²/2.
The quadratic form you've provided can be put into canonical form by completing the square. The process involves a few steps:
Rearrange the terms so that all of the x, y, and z terms are on one side of the equation, with a constant term on the other side. In this case, the equation is already in this form.
Divide every term by 2, to make the next step more manageable. This gives us x²/2+ y²/2 + z²/2 + xy + yz - zx
For each variable, add and subtract the square of half of the coefficient of that variable's corresponding x,y,z coefficient. In this case, x²/2, y²/2, z²/2 are all squares so no action need to be done
Group like terms: (x²/2 + xy/2 + xz/2) + (y²/2 + yz/2 + yx/2) + (z²/2 + zx/2 + zy/2)
Each of the group in step 4 is a perfect square, and can be rewritten as (x/√2 + y/√2 + z/√2)² so that the equation becomes (x + y + z)²/2
So the equation x² + 2y² + 3z² + 2xy + 2yz - 2zx can be put into canonical form, (x + y + z)²/2. The conanical form is a useful representation of a quadratic form because it allows you to see the symmetry in the equation and also it allow us to see the level set of the form.
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For the given quadratic form equation x² + 2y² + 3z² + 2xy + 2yz - 2zx has the canonical form as [tex]\frac{ (x + y + z)^2}{2}[/tex]
Here we have to find the quadratic form you've provided can be put into canonical form by completing the square.
And the process involves a few steps,
First, we have to rearrange the terms so that all of the x, y, and z terms are on one side of the equation, with a constant term on the other side.
Now we have to divide every term by 2, to make the next step more manageable,
[tex]= > \frac{x^2}{2} + \frac{y^2}{2} + \frac{z^2}{2} + xy + yz - zx[/tex]
Now, we have to add and subtract the square of half of the coefficient of that variable's corresponding x,y,z coefficient, then we get the following,
[tex]= > \frac{x^2}{2} + \frac{y^2}{2} + \frac{z^2}{2} + xy + yz - zx[/tex]
And then we have to group like terms, then we get the equation like the following,
[tex]= > (\frac{x^2}{2} + \frac{xy}{2} + \frac{xz}{2} ) + (\frac{y^2}{2} + \frac{yz}{2} + \frac{yx}{2} ) + (\frac{z^2}{2} + \frac{zx}{2} + \frac{zy}{2} )[/tex]
In order to convert each of the group in step 4 is a perfect square, and then we have to rewritten as [tex](\frac{x}{\sqrt{2} } + \frac{y}{\sqrt{2} }+ \frac{z}{\sqrt{2} } )^2[/tex]
Then we get the canonical equation as
[tex]= > \frac{ (x + y + z)^2}{2}[/tex]
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find the average value of f(x, y, z) = x + z2 on the truncated cone z2 = x2 + y2, with 1 ≤ z ≤ 16.
The average value of function f(x,y,z)=x+z^2 is 3.
To find the average value of f(x, y, z) = x + z^2 on the truncated cone z^2 = x^2 + y^2, with 1 ≤ z ≤ 16, we need to evaluate the integral of f(x, y, z) over the region defined by the truncated cone, and divide by the volume of that region.
The volume of the truncated cone is given by 1/3 * π * (R^2 + r^2 + R*r), where R and r are the radii of the top and bottom circles of the cone respectively. In this case R = 16 and r = 1, so the volume is 1/3 * π * (256 + 1 + 16) = 85.33...
The integral of f(x, y, z) over the region defined by the truncated cone can be found by converting the problem to cylindrical coordinates and then evaluating the integral.
After this, The solution will be
∫∫∫ (x + z^2) dV
= ∫∫∫ (rcos(θ) + z^2) rdzdθdr
= ∫∫∫ (rcos(θ) + r^2) dzdθdr
= ∫∫ (r^2cos(θ) + r^3/3) dθdr
= (r^3/3) * ∫∫ cos(θ) dθdr
after evaluating this, the final answer will be
(1/3) * (r^3) * (∫ cos(θ) dθ) * (∫ dr)
= (1/3) * (1^3) * (sin(θ)) * (r^2)
= (1/3) * (1^3) * (sin(θ)) * (16^2 - 1^2)
= (1/3) * (1) * (sin(θ)) * (255)
= (255/3) * (sin(θ))
and the average value is (255/3) * (sin(θ)) / 85.33... = 3
Therefore, The average value of function f(x,y,z)=x+z^2 is 3.
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Please help me I have a learning disability and need help with this.
Define a variable and write the phrase as an algebraic expression.
four times as many apples
What is the phrase as an algebraic expression? Use the variable a
**Type your answer with no spaces between variables, operations, or numbers.**
Answer here ________
Answer:
Step-by-step explanation:
a = number of apples
"four times as many apples" written as an algebraic expression:
4a
A satellite dish is shaped like a paraboloid of revolution. The signals that emanate from a satellite strike the surface of the dish and are reflected to a single point, where the receiver is located. If the dish is 12 feet across at its opening and 2 feet deep at its center, at what position should the receiver be placed?
The receiver should be placed ____ feet from the base of the dish, along its axis of symmetry.
(Type an exact answer in simplified form.)
The receiver should be placed 9 feet away from the base of the dish, along its axis of symmetry.
This was found by using the equation for a vertical parabola, y = (¹/₄a)(x - h)² + k,
where (h, k) are the coordinates of the center.
As the parabola is at the center, (h, k) = (0, 0) and the equation simplifies to y = ¹/₄ax² .
Using the given information that the dish is 12 feet across at its opening and 2 feet deep at its center, the coordinate of the given point is (12,4) and by substituting this information into the equation,
the value of a is found as 9 ft which represents the distance between the vertex and the focus.
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Find the area of the square.
A square. Its width is marked by a curved bracket labeled four-ninths centimeters.
The area of square will be;
⇒ 16/81 cm²
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
The width of square = 4/9 centimeters
Now,
We know that;
The area of square = Side × Side
Here, The width of square = 4/9 centimeters
Hence, The area of square with side 4/9 cm is,
⇒ The area of square = Side × Side
⇒ The area of square = 4/9 × 4/9
⇒ The area of square = 16/81 cm²
Thus, We get;
⇒ The area of square = 16/81 cm
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Fill in the blank is a graph of each data value plotted as a point. w/ is a graph of each data value plotted as a point. stemplot dotplot Pareto chart frequency polygon
A dot plot is a graph of each data value plotted as a point.
What is a dot plot and its functions?A dot plot, which also known as a strip plot or dot chart, is a simple form of data visualization which consists of data points plotted as dots on a graph with an x- and y-axis. A dot plot is used to encode data in a small circle or a dot. The dot plot is presented on a number line which displays the distribution of numerical variables where a value is described by each dot.
Dot plots are used for continuous, quantitative, univariate data. Data points may be marked if there are few of them. Dot plots are one of the simplest statistical plots, and are fit for small to moderate sized data sets. Dot plots are useful for highlighting the clusters and gaps, as well as the outliers.
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ODDI ECCE LED Use the Laplace Transform to solve the initial value problem: y" + 164 = 5(t – 2), y(0) = 3, y'(0) = 8
The solution of the initial value problem: y" + 164 = 5(t – 2), y(0) = 3, y'(0) = 8, by using the Laplace transform is equals to 3/s - 8/s² - 166/s³ + 5/s⁴ .
We have, a intial value problem as present below,
y" + 164 = 5(t – 2) ---(1)
and y(0) = 3, y'(0) = 8
We have to solve (1) using laplace transform. Taking Laplace Transform both sides in (1), L[y" + 164] = L[5(t – 2)]
Since, Laplace transform is linear nature,
L [ y" ] + L [ 164] = L[5(t – 2)]
Now, determine the Laplace Transform of left hand side, L [ y" ] + 164 L [1]
= s²L [ y(t)] - s y(0) + y'(0) + 164L [ 1]
= s²L [ y(t)] - 3s + 8 + 164/s
( since, y(0) = 3, y'(0) = 8 , L(1) = 1/s )
Consider right hand side, L[5(t – 2)]
= L( 5t ) - L(2) = 5L(t) - 2 L(1)
= 5 (1!/s²) - 2/s = 5/s² - 2/s
Now, s²L [ y(t)] - 3s + 8 + 164/s = 5/s² - 2/s
=> s²L [ y(t)] = 3s - 8 - 164/s + 5/s² - 2/s
=> s²L[y(t) ] = 5/s² + 3s - 166/s - 8
=> L[ y(t)] = 5/s⁴ + 3/s - 166/s³ - 8/s²
=> L[ y(t)] = 3/s - 8/s² - 166/s³ + 5/s⁴
So, the Laplace Transform of Initial value problem (1), Y(s) is 3/s - 8/s² - 166/s³ + 5/s⁴
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The tables represent the points earned in each game for a season by two football teams. Eagles 3 24 14 27 10 13 10 21 24 17 27 7 40 37 55 Falcons 24 24 10 7 30 28 21 6 17 16 35 30 28 24 14 Which team had the best overall record for the season? Determine the best measure of center to compare, and explain your answer. Eagles; they have a larger median value of 21 points Falcons; they have a larger median value of 24 points Eagles; they have a larger mean value of about 22 points Falcons; they have a larger mean value of about 20.9 points
The team that had the best overall record for the season is C. Eagles; they have a larger mean value of about 22 points Falcons; they have a larger mean value of about 20.9 points
What is the mean about?The best measure of center to compare the overall records of the two teams is the mean (average) value of the points earned in each game. This is because the mean is a commonly used measure of center in statistics and provides a good overall summary of the data set.
In this case, the Eagles have a larger mean value of about 22 points (calculated by summing the points and dividing by the number of games) compared to the Falcons' mean value of about 20.9 points. So, the correct answer would be Eagles; they have a larger mean value of about 22 points
It's worth noting that using the median value in this case is not the most accurate, because this will give you a more robust representation of the center of the dataset in cases where data have outliers.
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Write the equation of the line in fully simplified slope-intercept form.
Answer:
y = -5/3x -7
Step-by-step explanation:
You want the slope-intercept equation of the line that goes through points (-3, -2) and (0, -7).
SlopeThe slope is given by the formula ...
m = (y2 -y1)/(x2 -x1)
m = (-7 -(-2))/(0 -(-3)) = -5/3 . . . . . . use the given point coordinates
InterceptThe y-intercept is the point on the y-axis, where the y-value is -7.
Slope-intercept formThe slope-intercept form of the equation is ...
y = mx +b . . . . . . . line with slope m and y-intercept b
y = -5/3x -7 . . . . . . line with slope -5/3 and y-intercept -7
Please help me! I need help w this asap!!!
y = -3x - 4 is the figure's reflection, which is y = -3x + 2. An object with only one dimension, a line has length but no width .
what is line ?A line is a straight, thickness-free, one-dimensional object in geometry that extends indefinitely in both directions. An object with only one dimension, a line has length but no width. A line is made up of several points that are endlessly stretched in the opposing directions. Collinear points are described as two points that are on the same line. An endlessly long, two-directional line is referred to as a line. It just has one, and that is length. Collinear points are those that are situated along the same path. A line is drawn with an arrowhead as it is defined by two points as illustrated below.
given
We know that the line y = 3x + 2y is reflected in the line y = -1
Observing the coordinate system, we conclude that the lines y = 3x + 2 and y=−1 intersect at the point whose coordinates are (-1,-1).
The line y = 3x + 2y intersect y-axis at the point whose coordinates are (0,-4).
So, the image must pass trough these two points (-1,-1) and (0,-4).
Now, we will substitute these two points in the equation of the line.
[tex]\frac{y - y2}{y2 - y1} = \frac{x - x2}{x2 - x1}[/tex]
x1 = -1
x2 = 0
y1 = -1
y2 = -4
[tex]\frac{y - ( -4 )}{-4 - ( -1 )} = \frac{x - 0}{0 - ( -1 )}[/tex]
[tex]\frac{y + 4}{3} = \frac{x}{1}[/tex]
y = -3x - 4
y = -3x - 4 is the figure's reflection, which is y = -3x + 2 .
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A complex number is a number that can be written in the form a bi, where a and b are real numbers. in the complex number 4 2i, 4 is the part. in the complex number 4 2i, 2 is the part.
In the complex number 4 + 2i, 4 is the real part. In the complex number 4 + 2i, 2 is the imaginary part.
Complex numbers are those that are represented as a+ib, where a and b are actual numbers and i is an imaginary number termed a "iota."
Imaginary numbers are those that don't exist in reality. An imaginary number produces a negative value when squared. It is shown as Im (). Example: The numbers 2, 7, and 11 are all fictitious.
The two parts of the complex number are called the real part and the imaginary part. The imaginary part is identified by its multiplier of i.
In the given number, the 2 is multiplied by i, so 2 is the imaginary part. The other part, 4, is the real part.
Therefore, In the complex number 4 + 2i, 4 is the real part. In the complex number 4 + 2i, 2 is the imaginary part.
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In the complex number 4+2i, the real part is 4 and the imaginary part is 2. In the complex number 4+2i, 4 is the real part and 2 is the imaginary part.
In general, a complex number can be written as a + bi, where a is the real part and b is the imaginary part. For example, in the complex number 3 + 4i, the real part is 3 and the imaginary part is 4.
The real part of a complex number is the coefficient of the real number (in this case, 3) in the complex number. The imaginary part of a complex number is the coefficient of the imaginary unit i in the complex number.
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Match each exponential expression with its expanded form.
Each exponential expression is matched with its expanded form as;
-2⁴. Option E
2³. Option C
(-2)⁴. Option A
2². 2³. Option B
What is a index form?A index form can be described as a mathematical method or way of writing numbers or values that re too small or too large in simpler and comprehensible forms.
Other forms for index forms are standard forms or scientific forms.
From the information given, we have that;
-2⁴
This is represented as;
-2 × 2 × 2 × 2
2³
The index form is written as;
2 × 2 × 2
(-2)⁴, written as
-2 ×-2 × -2 ×-2
Also, 2². 2³ is written in the form;
(2 × 2)× ( 2× 2 × 2)
Hence, index forms simplifies expressions
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What are the 7 types of fractions?
Fractions that are written as a numerator and denominator, including proper, improper, mixed, unit, complex, reciprocal, and equivalent.
Fractions are a mathematical concept written as a fraction, which is a combination of a numerator and denominator. There are 7 types of fractions: proper fractions, improper fractions, mixed fractions, unit fractions, complex fractions, reciprocal fractions, and equivalent fractions. Proper fractions have a numerator that is less than the denominator. Improper fractions have a numerator that is greater than the denominator. Mixed fractions are a combination of a whole number and a proper fraction. Unit fractions have a numerator of 1 and a denominator that can be any number. Complex fractions have both a numerator and denominator that are fractions. Reciprocal fractions are the inverse of a fraction, with the numerator and denominator reversed. Understanding these 7 types of fractions is essential for solving math problems and understanding mathematical concepts.
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Proper, improper, mixed, unit, complex, reciprocal, and equivalent fractions are all written with a numerator and a denominator.
Combining a full number and a legal fraction results in a mixed fraction. In unit fractions, the denominator, which can be any number, has a numerator of 1. Numerator and denominator of complex fractions are also fractions. With the numerator and denominator switched around, reciprocal fractions are the inverse of a fraction.
As a combination of a numerator and a denominator, a fraction is a mathematical term that expresses fractions. There are seven different kinds of fractions: unit fractions, complex fractions, reciprocal fractions, equivalent fractions, and proper and improper fractions. Numerators that are less than the denominator are required for proper fractions. Numerators that are larger than the denominator are indicative of improper fractions.
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one and five eighths, negative three halves, seventeen percent, negative 1.7
Part A: Rewrite all the values into an equivalent form as fractions
The values rewritten into an equivalent form as fractions include the following:
One and five eighths = 13/8.Negative three halves = -3/2.Seventeen percent = 17/100.Negative 1.7 = -17/10.What is a fraction?In Mathematics, a fraction simply refers to a numerical quantity which is not expressed as a whole number. This ultimately implies that, a fraction is simply a part of a whole number.
What are the parts of a fraction?In Mathematics, a fraction comprises two (2) main parts and these include the following:
NumeratorDenominatorFor instance, 5 by 8 should be read as "five eighths" and it simply means that five (5) parts out of eight (8) equal parts in which the whole part is divided.
Similarly, -3 by 2 should be read as "negative three halves" and it simply means that two (2) parts out of negative three (3) equal parts in which the whole part is divided. Additionally, the number 3 represents the numerator while the number 2 represents the denominator.
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Evaluate the iterated integral by converting to polar coordinates.
a
0
0 4x2y dx dy
−
a2 − y2
The iterated integral evaluates to zero when converted to polar coordinates.
The iterated integral can be converted to polar coordinates using the following equation:
0 0 4x2y dx dy = 2π ∫0 a r dr dθ
This can be further simplified by integrating with respect to r:
2π∫0 a (a2−r2) dr
The integral can now be evaluated by calculating the definite integral between 0 and a:
2π [a3/3 - r3/3] |0 a
The evaluated integral is then simplified to:
2π[a3/3 - a3/3]
Finally, the evaluated integral is multiplied by 2π to give the final result:
2π(0)
Therefore, the answer is 0.
The iterated integral can be converted to polar coordinates using the equation
0 0 4x2y dx dy = 2π ∫0 a r dr dθ.
This can then be further simplified by integrating with respect to r, resulting in
2π∫0 a (a2−r2) dr.
The integral can be evaluated by calculating the definite integral between 0 and a, which is
2π [a3/3 - r3/3] |0 a.
This evaluated integral is simplified to
2π[a3/3 - a3/3]
and is then multiplied by 2π to give the final result; 2π(0). Therefore, the answer is 0.
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Given that g(x) = 4x 6, find the value of x that makes g(x) = 14. (5 points) −50 −5 2 8
The value of x is 2.
What is function?An expression, rule, or law in mathematics that establishes the relationship between an independent variable and a dependent variable (the dependent variable). In mathematics and the sciences, functions are fundamental for constructing physical relationships.
Given
g(x) = 4x + 6.....g(x) = 14
14 = 4x + 6
subtract 6 both sides
14 - 6 = 4x
8 = 4x
divide by 4 both sides
8/4 = x
2 = x
Hence value of x is 2.
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A teacher prints off review packets for her classes. Each 6th-grade packet is 10 pages long and each 7th-grade packet is 12 pages long.
Which expression represents the total number of pages printed if there are p 6th-grade packets printed and r 7th-grade packets printed?
The expression that represents the total number of pages is as follows:
number of printed pages = 10p + 12r
How to represent a situation with an expression?A teacher prints off review packets for her classes. Each 6th-grade packet is 10 pages long and each 7th-grade packet is 12 pages long.
Therefore, the expression that represents the total number of pages printed if there are p 6th-grade packets printed and r 7th-grade packets printed is as follows:
Hence,
number of printed pages = 10p + 12r
where
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The Campbell family drove 67 miles to Olympia National Park and 23 miles back home. Overall, how many miles did they drive?
Which number sentence would solve this word problem?
Answer: 90 miles
Step-by-step explanation:
67+23=90
=
Write the equation of the hyperbola with the information given:
13. foci: (-3,0), (1,0)
vertices: (-2,0),(0,0)
14. foci: (-9,0), (9,0)
vertices: (-4,0), (4,0)
15. Vertices: (0,-1), (0,1)
Asymptotes: y=1/3x, y=-1/3x
16. Vertices: (-6,0),(6,0)
Asymptotes: y=4/3x, y=-4/3x
PLEASE SHOW WORK!
Answer:
[tex]\textsf{13.}\quad(x+1)^2-\dfrac{y^2}{3}=1[/tex]
[tex]\textsf{14.}\quad\dfrac{x^2}{16}-\dfrac{y^2}{65}=1[/tex]
[tex]\textsf{15.}\quad y^2-\dfrac{x^2}{9}=1[/tex]
[tex]\textsf{16.}\quad\dfrac{x^2}{36}-\dfrac{y^2}{64}=1[/tex]
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{7.4 cm}\underline{Standard equation of a vertical hyperbola}\\\\$\dfrac{(y-k)^2}{a^2}-\dfrac{(x-h)^2}{b^2}=1$\\\\where:\\\phantom{ww}$\bullet$ $(h,k)$ is the center.\\ \phantom{ww}$\bullet$ $(h,k\pm a)$ are the vertices.\\\phantom{ww}$\bullet$ $(h,k\pm c)$ are the foci where $c^2=a^2+b^2$\\\phantom{ww}$\bullet$ $y =k\pm\left(\dfrac{a}{b}\right)(x-h)$ are the asymptotes.\\\end{minipage}}[/tex]
[tex]\boxed{\begin{minipage}{7.4 cm}\underline{Standard equation of a horizontal hyperbola}\\\\$\dfrac{(x-h)^2}{a^2}-\dfrac{(y-k)^2}{b^2}=1$\\\\where:\\\phantom{ww}$\bullet$ $(h,k)$ is the center.\\ \phantom{ww}$\bullet$ $(h\pm a,k)$ are the vertices.\\\phantom{ww}$\bullet$ $(h\pm c,k)$ are the foci where $c^2=a^2+b^2$\\\phantom{ww}$\bullet$ $y=k\pm\left(\dfrac{b}{a}\right)(x-h)$ are the asymptotes.\\\end{minipage}}[/tex]
Question 13Given:
foci: (-3, 0) and (1, 0)vertices: (-2, 0) and (0, 0)As the y-values of the foci and vertices are the same, the hyperbola is horizontal (opening left and right).
The center (h, k) is the midpoint of the vertices.
Therefore, the center is (-1, 0) and so:
h = -1k = 0Use the formula for the vertices (h±a, k) to determine the value of a:
[tex]\begin{aligned}\implies h\pm a&=-2\\-1\pm a&=-2\\\pm a&=-1\end{aligned}[/tex] [tex]\begin{aligned}\implies h\pm a&=0\\-1\pm a&=0\\\pm a&=1\end{aligned}[/tex]
Therefore:
a² = 1Use the formula for the foci (h±c, k) to determine the value of c:
[tex]\begin{aligned}\implies h\pm c&=-3\\-1\pm c&=-3\\\pm c&=-2\end{aligned}[/tex] [tex]\begin{aligned}\implies h\pm c &=1\\-1\pm c&=1\\\pm c &=2\end{aligned}[/tex]
Therefore:
c = 2To find b² use c² = a² + b² and the found values of a and c:
[tex]\begin{aligned}\implies c^2&=a^2+b^2\\2^2&=1^2+b^2\\4&=1+b^2\\b^2&=3\end{aligned}[/tex]
Substitute the found values of h, k, a² and b² into the formula to create an equation of the hyperbola:
[tex]\implies\dfrac{(x+1)^2}{1}-\dfrac{(y-0)^2}{3}=1[/tex]
[tex]\implies(x+1)^2-\dfrac{y^2}{3}=1[/tex]
Question 14Given:
foci: (-9, 0) and (9, 0)vertices: (-4, 0) and (4, 0)As the y-values of the foci and vertices are the same, the hyperbola is horizontal.
The center (h, k) is the midpoint of the vertices.
Therefore, the center is (0, 0) and so:
h = 0k = 0Use the formula for the vertices (h±a, k) to determine the value of a:
[tex]\begin{aligned}\implies h\pm a&=\pm4\\0\pm a&=\pm4\\\pm a&=\pm4\end{aligned}[/tex]
Therefore:
a² = 16Use the formula for the foci (h±c, k) to determine the value of c:
[tex]\begin{aligned}\implies h \pm c&=\pm9\\0\pm c&=\pm9\\\pm c&=\pm9\end{aligned}[/tex]
Therefore:
c = 9To find b² use c² = a² + b² and the found values of a and c:
[tex]\begin{aligned}\implies c^2&=a^2+b^2\\9^2&=4^2+b^2\\81&=16+b^2\\b^2&=65\end{aligned}[/tex]
Substitute the found values of h, k, a² and b² into the formula to create an equation of the hyperbola:
[tex]\implies\dfrac{(x-0)^2}{16}-\dfrac{(y-0)^2}{65}=1[/tex]
[tex]\implies\dfrac{x^2}{16}-\dfrac{y^2}{65}=1[/tex]
Question 15Given:
vertices: (0, -1) and (0, 1)[tex]\textsf{asymptotes}:\;\;y=\dfrac{1}{3}x\;\;\textsf{and}\;\;y=-\dfrac{1}{3}x[/tex]As the x-values of the vertices are the same, the hyperbola is vertical (opening up and down).
The center (h, k) is the midpoint of the vertices.
Therefore, the center is (0, 0) and so:
h = 0k = 0Use the formula for the vertices (h, k±a) to determine the value of a:
[tex]\begin{aligned}\implies k \pm a&=\pm1\\0\pm a&=\pm1\\\pm a&=\pm1\end{aligned}[/tex]
Therefore:
a² = 1Use the formula for the asymptotes to determine the value of b:
[tex]\begin{aligned}\implies k\pm\left(\dfrac{a}{b}\right)(x-h)&=\pm\dfrac{1}{3}x\\\\0\pm \left(\dfrac{1}{b}\right)(x-0)&=\pm\dfrac{1}{3}x\\\\\pm\dfrac{1}{b}x&=\pm\dfrac{1}{3}x\\\\\pm b&=\pm3\end{aligned}[/tex]
Therefore:
b² = 9Substitute the found values of h, k, a² and b² into the formula to create an equation of the hyperbola:
[tex]\implies\dfrac{(y-0)^2}{1}-\dfrac{(x-0)^2}{9}=1[/tex]
[tex]\implies y^2-\dfrac{x^2}{9}=1[/tex]
Question 16As the y-values of the vertices are the same, the hyperbola is horizontal.
The center (h, k) is the midpoint of the vertices.
Therefore, the center is (0, 0) and so:
h = 0k = 0Use the formula for the vertices (h±a, k) to determine the value of a:
[tex]\begin{aligned}\implies h \pm a&=\pm6\\0\pm a&=\pm6\\\pm a&=\pm6\end{aligned}[/tex]
Therefore:
a² = 36Use the formula for the asymptotes to determine the value of b:
[tex]\begin{aligned}\implies k \pm\left(\dfrac{b}{a}\right)(x-h)&=\pm\dfrac{4}{3}x\\\\0\pm \left(\dfrac{b}{6}\right)(x-0)&=\pm\dfrac{4}{3}x\\\\\pm \dfrac{b}{6}x&=\pm\dfrac{4}{3}x\\\\ \pm b&=\pm8\end{aligned}[/tex]
Therefore:
b² = 64Substitute the found values of h, k, a² and b² into the formula to create an equation of the hyperbola:
[tex]\implies \dfrac{x^2}{36}-\dfrac{y^2}{64}=1[/tex]
Why is sine called sine?
The term "sine" is derived from the Latin word sīnus, which means "bay". Sine is a mathematical function used to define a ratio between the length of a side of a right triangle and its opposite side.
It is also used to describe waveforms in trigonometry, electricity, and other sciences. The sine function is defined as the ratio of the length of the opposite side to the length of the hypotenuse of a right triangle. The sine of a given angle in a right triangle is equal to the ratio of the length of the opposite side to the length of the hypotenuse.
This ratio can be expressed as a number between -1 and 1, with 0 representing a right angle. Sine is also used to describe waveforms in trigonometry, electricity, and other sciences. In addition, sine is used to solve problems involving triangles, circles, and various quadratic equations.
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Reporting frequencies of sample data, such as eye color, ethnicity, grade point average, and height is done by using __________ statistics. A. inferential B. exploratory C. descriptive D. correlational Please select the best answer from the choices provided A B C D
Reporting frequencies of sample data, such as eye color, ethnicity, grade point average, and height is done by using (Option C.) descriptive statistics.
Using Descriptive Statistics to Analyze Sample DataDescriptive statistics are used to summarize, organize, and describe sample data, such as eye color, ethnicity, grade point average, and height. These statistics are used to analyze data and make inferences about larger populations.
For example, if a researcher was interested in determining the average grade point average of a certain population, they could use descriptive statistics to analyze the sample data.Descriptive statistics are used to calculate the mean, median, mode, and range of the data, as well as to provide visual representation of the data through charts and graphs. Descriptive statistics are one of the most commonly used forms of statistical analysis.
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Find the centroid of the region bounded by the given curves. y = x3, x + y = 30, y = 0 (x, y) =
the centroid of the region is (x, y) = (10, 1000/3).
(x, y) = (10, 1000/3)
1. Set up the equation for the centroid formula: x = (1/A)∫y dx and y = (1/A)∫x dy
2. Find the area of the region: A = ∫(y2 - y1) dx
3. Calculate the integral: ∫y dx = x4/4 + C and ∫x dy = xy + C
4. Substitute the boundaries into the integrals and solve for C: x4/4 + C = 30x and xy + C = 0
5. Substitute the solutions for C in the centroid formula: x = (1/A)∫y dx = (1/A)(30x - x4/4) and y = (1/A)∫x dy = (1/A)(xy - 0)
6. Substitute the boundaries into the area equation and solve for A: A = ∫(y2 - y1) dx = ∫(30x - x4/4 - 0) dx = 30x2/2 - x5/5 + C
7. Substitute the solutions for C in A: A = 30x2/2 - x5/5 + C = 30(30)2/2 - (30)5/5 + C = 27000/2 - 27000 + C = 13500 + C
8. Substitute the solutions for C in the centroid formula and solve for x and y: x = (1/13500 + C)(30x - x4/4) and y = (1/13500 + C)(xy - 0)
9. Substitute the boundaries into the centroid formula and solve for x and y: x = 10 and y = 1000/3
Therefore, the centroid of the region is (x, y) = (10, 1000/3).
the complete question is :
Find the centroid of the region bounded by the given curves. y = x3, x + y = 30, y = 0 (x, y) = (10, 1000/3)
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In AABC, the measure of ZC=90°, AC = 7, BA = 25, and CB= 24. What is the value of
the cosine of ZA to the nearest hundredth?
Answer:
Step-by-step explanation:
300
4. Which statement is always true when a transversal cuts parallel lines?
The sum of corresponding angles is 180°.
The angles in a vertical pair are acute.
Corresponding angles are supplementary.
Corresponding angles are congruent.
The corresponding angles are equal angles. Then the correct option is D.
What is an angle?The inclination is the separation seen between planes or vectors that meet. Degrees are another way to indicate the slope. For a full rotation, the angle is 360°.
Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.
Corresponding angle - If two lines are parallel then the third line. The corresponding angles are equal angles.
Let's check all the options:
The sum of corresponding angles is 180°. The statement is false.
The angles in a vertical pair are acute. The statement is false.
Corresponding angles are supplementary. The statement is false.
Corresponding angles are congruent. The statement is True.
The corresponding angles are equal angles. Then the correct option is D.
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