Y'=33.67+0.54*X' .
For married couples in their early 20s, the regression equation and the prediction of a husband's height. In statistics, a regression equation is used to determine whether or not there is a link between two sets of data.
What is the purpose of a regression equation?In statistics, a regression equation is used to determine whether or not there is a link between two sets of data. For instance, you might discover that a child grows roughly 3 inches a year if you measure their height each year. A regression equation can be used to model the three-inch growth tendency.
Detailed explanation:
r=0.5 \s x'=64.5 \s Sx=2.5 \s y'=68.5 \s Sy=2.7The slope of the regression line is the linear correlation coefficient multiplied by the standard deviation for y' divided by the standard deviation for x', according to the general regression line equation: Y'=a+b*X'The mean of the lowered by the slope and mean of x is the intercept with axis y.The following is the equation regression line:Y'=33.67+0.54*X'.To learn more about Regression equation refer to:
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50 points if this is correct i need this asap please
Which is the best definition of a two-step equation?
In a two-step equation, you must always start by using the division property of equality.
In a two-step equation, you need to use one inverse operation to solve.
A two-step equation is one that you need to use two properties of equality to solve.
A two-step equation is one that you need to use only a single property of equality to solve.
Answer:
c
Step-by-step explanation:
A two-step equation is one that you need to use two properties of equality to solve.
Each serving ofsalad dressing uses 3 tablespoons of olive oil and 1 tablespoon of vinegar. A tablespoon of olive oil costs $0.13 and a tablespoon of vinegar costs $0.04. What is the cost of x servings of dressing in dollars?
The cost of x servings of dressing in dollars will be $0.43x.
According to the question,
We have the following information:
Each serving of salad dressing uses 3 tablespoons of olive oil and 1 tablespoon of vinegar.
Cost of 1 tablespoon of olive oil = $0.13
Cost of 1 tablespoon of vinegar = $0.04
So,
The cost of each serving of salad = Cost of 3 tablespoons of olive oil + cost of 1 tablespoon of vinegar
The cost of each serving of salad = 3*0.13 + 0.04
The cost of each serving of salad = $(0.39+0.04)
The cost of each serving of salad = $0.43
Now,
The cost of x servings of salad = $0.43x
(Note that if we have to find the cost of more than 1 product than the number has to be multiplied with the cost of one product.)
Hence, the cost of x servings of salad dressing is $0.43x.
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Find sides AM and side AR
AR-9x-2 RM-2x+6 AM-5x-3
Using the segment addition postulate, the lengths of the sides are given as follows:
AM: 4.5625.AR: -0.8125.Segment Addition PostulateThe segment addition postulate is a geometry axiom that states that a line segment, divided into a number of smaller segments, has the length given by the sum of the lengths of the smaller segments.
In this problem, the line AM is divided into two segments by point R, as follows:
AR = 9x + 2.RM = 2x + 6.The total length of the line is given by:
AM = -5x + 3.
Hence the solution for x is given as follows:
AR + RM = AM
9x + 2 + 2x + 6 = -5x + 3
11x + 8 = -5x + 3
16x = -5.
x = -5/16
x = -0.3125.
Hence the lengths are:
AM = 5x - 3 = -5(-0.3125) + 3 = 4.5625.AR = 9x - 2 = 9(-0.3125) + 2 = -0.8125.There is a typo in the signals as we have a negative length, which is not possible, but the procedure is as shown in this problem.
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Which statement about nuclear fission is correct?(1 point)
Responses
Nuclear fission takes place in the nucleus of atoms.
Nuclear fission is used to generate water at nuclear power plants.
The fuel for nuclear fission is often helium.
Nuclear fission releases small amount of energy.
Answer:
(A) Nuclear fission takes place in the nucleus of atoms
Step-by-step explanation:
I took the test!
Find the missing side or angle. Round to the nearest tenth. a=4 b=5 c=7
Using the law of cosines, the missing angles are:
A = 34.1°, B = 44.4°, C = 101.5°
What is the Law of Cosines?The law of cosines is used to solve a triangle when given the lengths of the three sides of a triangle, and it is expressed by the formula:
c² = a² + b² - 2ab × Cos C.
Given the following:
a = 4 b = 5 c = 7Find C by substituting the values into the law of cosines formula:
7² = 4² + 5² - 2 × 4 × 5 × Cos C
49 = 16 + 25 - 40 × Cos C
49 = 41 - 40Cos C
49 - 41 = -40Cos C
8/-40 = Cos C
-0.2 = Cos C
C = Cos^(-1)(-0.2)
C = 101.5°
Find B using the Law of Sines:
sin B/b = sin C/c
Substitute
sin B/5 = sin 101.5/7
(sin B)(7) = (sin 101.5)(5)
sin B = (sin 101.5)(5)/7
sin B = 0.69995
B = Sin^(-1)(0.69995)
B = 44.4°
Find the measure of angle A using the triangle sum theorem:
A = 180 - 101.5 - 44.4
A = 34.1°
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A package contains 11 resistors, 2of which are defective. If 4 are selected find the probability of getting the following results.P(1 defective)=
From the given values, we know there are 2 defective resistors and 9 not defective. then, we have
[tex]P(1\text{ defective)=}\frac{C^9_3\times C^2_1}{C^{11}_4}[/tex]where
[tex]C^9_3[/tex]denote the combinations of 9 elements taking in 3, that is 3 good resistor from the 9 which are not defective. Similarly,
[tex]C^2_1[/tex]denotes the combinations of 2 elements taking in 1, that is, 1 defective resistor form the 2 defective resistors.
Then, we have
[tex]P(1\text{ defective)=}\frac{84\times2}{330}[/tex]then, the answer is
[tex]P(1\text{ defective) =}0.509[/tex]A company's stock began the day at $ 36.77per share. That price drops by $1.69 each hour. What is the price per share after 5 hours? What would it be after 23 hours if this rate continues? Use pencil and paper. Explain what the signs of the answers mean in this context.
The price per share after 5 hours is $28.32
The price per share after 23 hours is $-2.1
Given,
A company's stock began the day at $ 36.77per share.
and, price drops be $1.69 each hour.
To find the what is the price per share after 5hours
and, also find what will be after 23 hours rate continues?
Now, According to the question:
The price of the company's stock is initially at $36.77 per share. Each hour the price drops by $1.69. This condition can be modeled by the function:
P(t) = 36.77 - 1.69t
Where t is the time in hours.
The sign means the function is decreasing as time passes.
When t=5 hours, the price will be:
P(5) = 36.77 - 1.69 × 5 = 28.32
The price per share after 5 hours is $28.32
Now find the price when t=23 hours
P(23) = 36.77 - 1.69 × 23 = - 2.1
The price per share after 23 hours is $-2.1
Hence, The price per share after 5 hours is $28.32
The price per share after 23 hours is $-2.1
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given circle K with diameter IJ and radius KG. GH is tangent to K at G. If GH =6 and KH =8, solve dor KG. Round your answer to the nearest tenth if necessary. If the answer cannot be determined click cannot be determined.
EXPLANATION:
We are given a circle K with radius KG. Note here that line KJ and line KG are both radii of the circle given.
Also we know that a line tangent to a circle at the point of intersecting with the radius forms a 90-degree angle with the radius.
We can now extract the following triangle from the diagram provided;
We now have a right triangle which we shall solve by use of the Pythagorean theorem;
[tex]a^2+b^2=c^2[/tex]Where we have c as the longest side (hypotenuse) and then a and b are the two other sides. Substituting into the equation above now gives us;
[tex]\begin{gathered} a^2+b^2=c^2 \\ KG^2+6^2=8^2 \\ KG^2+36=64 \end{gathered}[/tex]Subtract 36 from both sides;
[tex]\begin{gathered} KG^2+36-36=64-36 \\ KG^2=28 \end{gathered}[/tex]Take the square root of both sides;
[tex]\begin{gathered} \sqrt[]{KG^2}=\sqrt[]{28} \\ KG=5.2915 \end{gathered}[/tex]Rounded to the nearest tenth, the answer is;
ANSWER:
[tex]KG=5.3[/tex]May Someone Please Give Me The Answers To The Problems I Haven’t Done (Please Mark Which Ones They Are)Thank You!!
The simplest form of the ratios are:
(A) 3/1 = 3(B) 6/2 = 3(C) 18/6 = 3(D) 36/12 = 3What are ratios?An ordered pair of numbers a and b, written as a / b, is a ratio if b is not equal to 0. A proportion is an equation that sets two ratios at the same value.For instance, you could write the ratio as follows: 1: 3 if there is 1 boy and 3 girls (for every one boy there are 3 girls).
So, the ratios in the simplest form are:
We can observe that the simplest form of all the ratios is similar which is 3.
Therefore, the simplest form of the ratios are:
(A) 3/1 = 3(B) 6/2 = 3(C) 18/6 = 3(D) 36/12 = 3Know more about ratios here:
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Tom’s car has 1119 gallons of gas. If he uses 38 of the gas, how much gas does the car have left?
Answer:
1,081 gallons
Step-by-step explanation:
1,119 - 38 = 1,081
A man realizes he lost the detailed receipt from the store and only has the credit card receipt withthe after-tax total. If the after-tax total was $1,656.99, and the tax rate in the area is 8.396, what wasthe pre-tax subtotal?
The pre-tax subtotal was $171.00.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Given that:
After-tax total = $1,656.99
Tax rate in the area = 8.396%
The pre-tax price would be 100% and this tax rate is an addition.
Total percent = (100+8.396)% = 108.3%
Consider x be the pre-tax amount.
The total bill= (after-tax total) = (pre-tax subtotal) + 8.3% · (pre-tax subtotal)
(after-tax total) = (pre-tax subtotal) 108.3
Divide by the coefficient on the right;
(pre-tax subtotal) = (after-tax total)/108.3
= $1,656.99/108.3
= $171.00
Therefore, The pre-tax subtotal was $171.00.
The pre-tax amount was $130.
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The diameter D of a sphere is 12.4 m. Calculate the sphere's surface area A.
Use the value 3.14 for , and round your answer to the nearest tenth.
The sphere has a surface area of 482.8064 square meters
How to determine the surface area of the sphere?From the question, the given parameters are:
Diameter, D = 12.4 meters
π = 3.14
The surface area of the sphere is calculated using the following formula
S = 4π(D/2)²
Substitute the given parameters in the above formula
So, we have
S = 4 * 3.14 * (12.4/2)²
Evaluate the exponent
This is represented as
S = 4 * 3.14 * 38.44
Evaluate the product
This is represented as
S = 482.8064
Hence, the surface area of the sphere is 482.8064 square meters
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14. A function is defined by the
equation y = x² + 3x + 1. Which
statements are true? Select all
that apply.
O The equation in vertex form is y =
5
(x + ²³2) ²
I
A LOT
4
O The equation in vertex form is y = (x + ²)² − ³/
-
O The graph of the function has a minimum of y =
O The domain of the function is all real numbers
-² at x = -²
The correct statements regarding the quadratic function y = x² + 3x + 1 are given as follows:
A. The equation written in vertex-form is: (x + 3/2)² - 5/4.C. The graph of the function has a minimum of y = -5/4 at x = -3/2.D. The domain of the function is all real values.How to analyze the quadratic function?The quadratic function in this problem is defined as follows:
y = x² + 3x + 1.
Hence the coefficients are given as follows:
a = 1, b = 3, c = 1.
The x-coordinate of the vertex is given as follows:
x = -b/2a = -3/2.
The y-coordinate of the vertex is then given as follows:
y = (-3/2)² + 3(-3/2) + 1
y = 9/4 - 9/2 + 1
y = 9/4 - 18/4 + 4/4
y = -5/4.
Hence the vertex-form definition of the quadratic equation is given as follows:
y = (x + 3/2)² - 5/4.
Due to the positive leading coefficient, the vertex means that the function has a minimum of y = -5/4 at x = -3/2.
The domain of the function is all real values, as the quadratic function has no constraints such as a fraction or an even root.
Missing InformationThe complete problem is given by the image shown at the end of the answer.
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solve for w: x=7w-8z-4
Answer:
W=x/7+ 8z/7 + 4/7
Step-by-step explanation:
What was the distance of the first part of yuna's swim? round to the nearest tenth as needed. the distance in the first part of her swim was miles.
Using equations we now know that the distance of the first part of the Yuna's swim is 0.7 miles.
What are equations?A mathematical statement that has an "equal to" symbol between two expressions with equal values is called an equation. As in 3x + 5 Equals 15, for instance. Equations come in a variety of forms, including linear, quadratic, cubic, and others. The point-slope form, standard form, and slope-intercept form are the three main types of linear equations.So, let 'x' be the distance of the 1st part and 'y' be the time in hours of the 1st part.
1st part: 1/4 = x/y (Equation A)2nd part: 0.8 = 1.9 - x/2 - y (Equation B)Plot the equations on the graph as follows:
(Refer to the graph attached below)
Be obtain:
x = 0.7 milesy = 0.5 hoursTherefore, using equations we now know that the distance of the first part of the Yuna's swim is 0.7 miles.
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The complete question is given below:
In training for a triathlon, Yuna swam 1.9 miles in the open ocean, which took her 2 hours. For the first part of her swim, she averaged 1.4 miles per hour. For the second part of her swim, she swam against the current and started to tire, so her average speed decreased to 0.8 mph. What was the distance of the first part of Yuna's swim? Round to the nearest tenth as needed. The distance in the first part of her swim was miles.
Answer:
.7
Step-by-step explanation:
Area of sector in degrees. My answer is 25 pi I just want to check and make sure that’s right
1) The area of a sector of a circle can be found with the following formula:
[tex]\begin{gathered} A_S=\frac{\alpha}{360}\cdot\pi r² \\ A_s=\frac{90}{360}\dot{\cdot\pi(10)²} \\ A=\frac{\dot{100\pi}}{4} \\ A=25\pi \\ \end{gathered}[/tex]2) Thus the area of the sector is 25π cm²
Write an expeession equivalent to 0.4x
A. X-0.6x
B. 1-0.6x
C. X + 0.4
D. 0.4x-x
Answer:
A. X-0.6x
Step-by-step explanation:
A. X-0.6x = 0.4x YES
B. 1-0.6x = 1 - 0.6x NO
C. X + 0.4 = 1.4x NO
D. 0.4x-x = -0.6x NO
14. A can of vegetables has a paper label that covers the lateral surface are can, 4 in. 2.6 in. What is the lateral surface area of the can onded to the
We will have that the lateral area will be the following:
*First, we can see that if we were to cut a straight vertical line and unfold the label, we would get a rectangle, thus the surface area of the label will be given by:
[tex]S_A=h\cdot C[/tex]Here h is the height of the label and C is the circumference of the base, that is:
[tex]S_A=h\cdot2\pi r[/tex]Now, we determine the radius of the base, that is:
[tex]r=\frac{2.6}{2}\Rightarrow r=1.3[/tex]Now, we replace the values and solve for the surface area:
[tex]\Rightarrow S_A=(4)\cdot(2)\pi(1.3)\Rightarrow S_A\approx32.7[/tex]So, the surface area of the label on the can is approximately 32.7 squared inches.
How much would $500 invested at 6% interest compounded monthly be worth after 5 years? Round your answer to the nearest cent. A.$669.11B.$674.43C.$886.41D.$512.63
Solution:
Given that;
[tex]\begin{gathered} Principal=P=\text{ \$500} \\ rate=r=\frac{6}{100}=0.06 \\ time=t=\text{ 5 years} \end{gathered}[/tex]To find the amount in 5 years, we will apply the compound interest formula below
[tex]\begin{gathered} A=P(1+\frac{r}{n})^{nt} \\ Since,\text{ it is compounded montly, n = 12} \end{gathered}[/tex]Substitute the values of the variables into the formula above
[tex]\begin{gathered} A=500(1+\frac{0.06}{12})^{(5\times12)}=500\left(1+\frac{0.06}{12}\right)^{60}=674.42507 \\ A=\text{ \$}674.43\text{ \lparen nearest cent\rparen} \end{gathered}[/tex]Hence, the answer is B
Find the pairs (LOTS OF POINTS!)
1. The pairs for each tent, based on common factors of 40, are given as follows (1, 40), (2, 20), (4, 10), (5, 8), (8, 5), (10, 4), (20, 2), and (40, 1).
2. Matching the number of tents with the number of boys is as follows:
Number of Tents Number of Boys1 40
2 20
3 No match
4 10
5 8
6 No match
7 No match
What are the factors?The factors of a number are the numbers that can divide it exactly or without a remainder.
For instance, the factors of the number, 40, are 1, 2, 4, 5, 8, 10, 20, and 40.
Thus, there are 8 ways that the tents can be arranged to accommodate the campers (boys) based on the factors of 40.
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2/11 and 1/5 common denominator
Answer:
The answer is 55.
Step-by-step explanation:
2/11 = 2/11 × 5/5 = 10/55
1/5 = 1/5 × 11/11 = 11/55
Answer:
55
Step-by-step explanation:
2/11 and 1/5
To find the common denominator, take 11 and multiply by 5
11*5 = 55
2/11 * 5/5 = 10/55
1/5 * 11/11 = 1/55
Write a verbal sentence to represent each equation.
9.3n-3579
10. 2(n³ + 3n²) = 4n
11.
5n
n+3
-=n-8
The expression's variables can be represented by a different symbol than the conventional x and y.
A mathematical assertion represented in English is known as a verbal expression.What does an algebraic verbal model mean?Talking Model is a formula utilizing the terms found in the problem. Labels matching variables or numerical values to the linguistic model Equational Expression Modification of the Verbal Model by the substitution of mathematical values and variables.How to Convert Algebraic Expressions to Verbal Expressions.
Step 1: Recognize the algebraic operations—such as addition, subtraction, multiplication, and division—used in the expression.Step 2: Write a statement in which a vocabulary word is combined with the numbers to represent each of these processes.Therefore, the expression's variables can be represented by a different symbol than the conventional x and y.
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I have no clue what to do so pls include an explination
[tex]10=\frac{z}{2} +7[/tex]
The solution for the given linear equation is z = 6
How to solve the linear equation?
Here we have the following linear equation:
10 = z/2 + 7
To solve it, we need to isolate the variable in one of the sides of the equation.
First, we can subtract 7 in both sides:
10 - 7 = z/2 + 7 - 7
3 = z/2
Now we can multiply both sides by 2 to get:
2*3 = 2*(z/2)
6 = z
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a. Plot the data for the functions f(x) and g(x) on a grid.
b. Identify each function as linear, quadratic, or exponential, and use complete sentences to explain your choices.
c. Describe what happens to the function values in each function as x increases from left to right.
d. At what value(s) of x are the function values equal? If you cannot give exact values for x, give estimates.
For the given tables, we have that:
a. The grids are given at the end of the answer.
b. The functions are classified as follows: f(x) exponential, g(x) linear.
c. When x increases by one unit from left to right, we have that:
f(x) is multiplied by 4.g(x) is increased by 1.d. The functions are equal for a value between 1 and 2, as at x = 1 g(x) is greater while at x = 2 f(x) is greater.
Exponential and linear functionsThe difference between exponential and linear functions is in the rate of change, as:
Linear functions change by a constant amount when x changes by 1.Exponential functions change by a common ratio when x changes by 1.Hence the functions are classified as follows:
f(x) exponential: when x increases by 1, y is multiplied by 4.g(x) linear: when x increases by 1, y increases by 1.We have one exponential and one linear function, so it is quite difficult to solve an equation to verify where they are equal. We have that:
At x = 1, g(x) > f(x).At x = 2, f(x) > g(x).This means that at one point between x = 1 and x = 2, they intersected, that is, they had the same function values.
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Explain how the points A(9,-) and 8(9,3) are related. Use vocabulary words
in your explanation.
Answer: The points (9,-) and (9,3) Both have the same (y) coordinate.
Step-by-step explanation:
A class consists of 10 boys and 20 girls. Exactly half of the boys and half of the girls have brown eyes. Determine the probability that a randomly selected student will be a boy or a student with brown eyes.
Answer:
Step-by-step explanation:
30 students 15 have brown eyes 5 of the 15 are boys
1/3 chance a boy with brown eyes will be chosen.
1/2 a chance a student with brown eyes will be chosen
The number 24 is 4 times as many as 6.
Write this comparison as a multiplication equation.
+
Compare with multiplication
What is 1 1/4 Divided by 10
Answer: 0.125
Step-by-step explanation:
1 1/4 is equal to 5/4
5/4 is equal to 1.25
then you would do 1.25 divided by 10
once you do that you would get your answer of 0.125!
Answer:
11/4÷10 =
11/4 ×1/10=
11/40=
0.275
Step-by-step explanation:
you can ask questions for clarification
Solve for the value of z.
(7z+7)°
(9z-7)°
Base on congruency of vertical angles, the value of z is 7.
What are vertically opposite angles?Vertically opposite angles are angles that are opposite one another at a specific vertex and are created by two straight intersecting lines.
In other words, vertically opposite angles are angles that opposed each other at one specific vertex, and are formed by two straight intersecting line.
Vertically opposite angles are congruent to each other.
Therefore,
7z + 7 = 9z - 7
subtract 9z from both sides of the equation
7z + 7 = 9z - 7
7z - 9z + 7 = 9z - 9z - 7
-2z + 7 = - 7
subtract 7 from both sides of the equation
-2z + 7 = - 7
-2z + 7 - 7 = - 7 - 7
- 2z = - 14
divide both sides by - 2
z = - 14 / -2
Therefore,
z = 7
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At 10:00 a.m., Han and Tyler both started running toward each other from opposite ends of a 10-mile path along a river. Han runs at a pace of 12 minutes per mile. Tyler runs at a pace of 15 minutes per mile.
Do Han and Tyler meet on the path within 1 hour?
If Han and Tyler both started running toward each other from opposite ends of a 10-mile path along a river. Han and Tyler will not meet on the path within 1 hour
Calculations to show if Han and Tyler meet on the path within 1 hourThe following information is gotten from the question
Han and Tyler both started running toward each other from opposite ends of a 10-mile path
Han runs at a pace of 12 minutes per mile
Tyler runs at a pace of 15 minutes per mile
Distance covered by Han in 1 hour
12 minutes = 1 mile
60 minutes = ? miles
cross multiplying gives
? = 60 / 12
? = 5 miles
Distance covered by Tyler in 1 hour
15 minutes = 1 mile
60 minutes = ? miles
cross multiplying gives
? = 60 / 15
? = 4 miles
This means that Han covers 5 miles in and Tyler covers 4 miles, in a 10 mile distance.
In one hour the distance covered
= 5 miles + 4 miles
= 9 miles
9 miles is less than 10 miles hence they will not meet in the path within one hour
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