sketch the solid whose volume is given by the iterated integral. 1 0 1− x 0 3 − 3z dy dz dx 0

Answers

Answer 1

The solid is a rectangular prism with a triangular cut-out.

The volume of the solid is given by the iterated integral 1 0 1− x 0 3 − 3z dy dz dx 0. The integral is taken over a three-dimensional rectangular region with x-coordinates between 0 and 1-x, y-coordinates between 0 and 3, and z-coordinates between 0 and 3-3z.

This describes a rectangular prism with length 1-x, width 3 and height 3-3z. However, the triangular cut-out is defined by the equation of the plane z = y/3. It's a triangular region in the zy-plane, with a height of 3 and a base of 3x. This triangular cut-out is "slicing" the rectangular prism from the corner (x,0,0) to the corner (x,3,3x/3) in the xyz-plane.

The final shape is a rectangular prism with a triangular cut out from the corner, with a base on the xy-plane and the vertex on the z-axis. The height, width and length of the rectangular prism are 3, 3 and 1-x respectively.

This type of iterated integral is useful to calculate the volume of a solid with complex boundaries, it's also easy to visualize the shape of the solid by looking at the limits of integration.

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Related Questions

A rocket is launched in the air. Its height in feet is given by h= -16t^2+112th=−16t 2 +112t where tt represents the time in seconds after launch. How many seconds have gone by when the rocket is at its highest point?

Answers

The rocket is at its highest point 3.5 seconds after launch.

What is the function?

The function is defined as a mathematical expression that defines a relationship between one variable and another variable.

To determine the time when the rocket is at its highest point, we need to find the value of t when h is a maximum. To do this, we can take the derivative of h with respect to t, and set it equal to 0.

h = -16t²+112t

∂h/∂t = -32t + 112 = 0

Solving for t we get,

t = 112/32 = 7/2 = 3.5 seconds

Thus, the rocket is at its most elevated point 3.5 seconds after launch.

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find the coordinates of the image (2,4) under the transformation r y-axis t 3,-5

Answers

The coordinates of the image (2,4) under the transformation are (4, -14)

What is Graph?

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

The image of the point A (2, 4) with respect to the point T (3, -5)

Suppose the image of A is B

B, T, and A are collinear and T is the mid point of segment BA

by section formula we can calculate the coordinates of B

3 = ( 2 + x)/2

x = 6–2 = 4

Now -5=(4+y)/2

-10=4+y

-14=y

The image B = (4, -14)

Hence, the coordinates of the preimage are  (4, -14).

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Could someone please help. please help asap I need it. 20 points!
find the​ x- and​ y-intercepts
and write The equation in standard form with integer coefficients

Answers

Answer:

there is not enough information i'm so sorry.

Step-by-step explanation:

given : a:b = 7:15
and
b:c = 10:4

find :
a:b:c



second given : a:b = 2:3
and
b:c = 4:5

find : a:b:c

Answers

The ratios a : b : c in both scenarios are a : b : c = 7 : 15 : 6 and a : b : c = 8 : 12 : 15

How to determine the ratios a : b : c?

From the question, we have the following parameters that can be used in our computation:

Compound ratios

Ratio 1

Here, we have the ratios to be

a : b = 7 : 15

and

b : c = 10 : 4

Multiply the ratio b : c = 10 : 4 by 1.5

So, we have the following representation

b : c = 15 : 6

When the ratios are combined, we have

a : b : b : c = 7 : 15 : 15 : 6

Remove the repetition

a : b : c = 7 : 15 : 6

Ratio 2

Here, we have the ratios to be

a : b = 2 : 3

and

b : c = 4 : 5

Multiply the ratio b : c = 4 : 5 by 3/4

So, we have the following representation

b : c = 3 : 15/4

When the ratios are combined, we have

a : b : b : c = 2 : 3 : 3 : 15/4

Remove the repetition

a : b : c = 2 : 3 : 15/4

Multiply by 4

a : b : c = 8 : 12 : 15

Hence, the ratio is 8 : 12 : 15

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Which of the following is NOT a property of the chi-square distribution?
A. The values of chi-square can be zero or positive, but they cannot be negative.
B. The mean of the chi-square distribution is 0
C. The chi-square distribution is different for each number of degrees of freedom, df = n - 1
D. The chi-square distribution is not symmetric.

Answers

Therefore, mean of the chi-square distribution has now become 0 and is not a characteristic of the chi square distribution, hence this is how the given chi square problem is resolved.

What is chi-square, and why would you use it?

To compare actual outcomes with predictions, statistical tests like the chi-square test are performed. This test's goal is to establish whether a discrepancy between observed and expected data results from chance or a connection between the variables under study.

Here,

The characteristics of the a chi square test must be discovered.

1. Untrue

A chi square distribution's mean is the same as its degree of freedom.

B) True

Asymmetry exists in the chi-square distribution.

C) True

Both 0 and 1 are valid values for the chi square.

Its foundation is a sum of the squared differences, hence it will never be negative.

D) True

For every degree of freedom, there is a separate chi-square distribution.

The freedom level is n - 1 when working with a singular population variance.

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Write an equation of the line that passes through (4,2) and is parallel to the given line.

Answers

The equation of line that passes through (4,2)

3x-4y-4 = 0

What is straight  line?

A line is a geometry object characterized under zero width object that extends on both sides. An straight line is just a line with no curves. So, a line that extends to both sides to infinity and has no curves is called an straight line.

Given,

Line l₁ passes through point (4,2)

Equation of the line l₁ passing through a point (x', y') ≡ (4, 2), if its slope is m₁:

y-y' = m₁(x-x')

y-2 = m₁(x-4)     --------- (a)

Line l₂ passes through the points (x₁, y₁) ≡(-2,2) and (x₂, y₂) ≡ (2,5)

Slope of line l₂ (m₂) = (y₂-y₁)/(x₂-x₁)

⇒m₂ = (5-2)/(2-(-2))

⇒m₂ = 3/4

since l₁ and l₂ are parallel

then slope of l₁ will be equal to l₂

⇒ m₁ = m₂

⇒ m₁ = 3/4

Putting value of m₁ in equation (a)

y-2 = 3/4(x-4)

⇒ 4y-8 = 3x-12

⇒ 4y+4 = 3x

⇒ 3x-4y-4 = 0

Hence, the equation of straight line is 3x-4y-4 = 0.

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Inside the Lincoln Memorial, the chamber that features the marble
statue of Abraham Lincoln has a height of 60 feet. Suppose a scale model of
the chamber has a height of 4 in. What is the scale of the model?

Answers

The solution is 15 feet

The scale of the model is given by the equation A = 15 feet

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

The height of the Lincoln statue = 60 feet

The model height of the chamber = 4 inches

And , the equation is

So , the scale of the model = height of the Lincoln statue / model height of the chamber

Substituting the values in the equation , we get

The scale of the model A = 60/4

The scale of the model A = 15 feet

Therefore , the value of A is 15 feet

Hence , the equation is A = 15 feet

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Semester 1 EOC Review
1. A square and rectangle have equal perimeters. The length of a side of the square
is 4x 1. The length of the rectangle is 2x + 2 and the width is 2x. Write and
solve an equation to find x.
-

Answers

The required equation is 4x = 2(2x + 2) + 2(2x) and the value of x is -1.

What is the perimeter of the rectangle?

The perimeter of a rectangle is defined as the addition of the lengths of the rectangle's four sides.

The perimeter of a square is 4 times the length of one side, and the perimeter of a rectangle is 2 times the length plus 2 times the width.

Since the perimeters of the square and rectangle are equal, we can set the two expressions equal to each other and solve for x:

4x = 2(2x + 2) + 2(2x)

4x = 4x + 4 + 4x

4x = 8x + 4

Subtracting 4x from both sides:

0 = 4x+4

Subtracting 4 from both sides:

-4 = 4x

Dividing both sides by 4:

x = -1

Thus, the required value of x is -1.

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What is the formula for calculating angle?

Answers

Angles Formulas at the center of a circle can be expressed as:

Central angle, θ = (Arc length × 360º)/(2πr) degrees

Sum of Interior angles=180°(n-2)

The angles formulas are used to find the measures of the angles. An angle is formed by two intersecting rays, called the arms of the angle, sharing a common endpoint.

The corner point of the angle is known as the vertex of the angle. The angle is defined as the measure of the turn between the two lines.

There are various types of formulas for finding an angle; some of them are the central angle formula, double-angle formula, etc...

We use the central angle formula to determine the angle of a segment made in a circle.

We use the sum of the interior angles formula to determine the missing angle in a polygon.

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Priya bought x grams of flour. Clare bought more than that. Select all equations that represent the relationship between the amount of flour that priya bought, x, and the amount of flour that clare bought, y.

Answers

The relationship between the amount of flour that Priya bought, x, and the amount of flour that Clare bought, y is X/Y= 11/8.

Proportional relationships are the relation between two variables where their ratios are equivalent, in this relationship one variable is always a constant value time the other which is known as the "constant of proportionality".

Let Claire buy Y grams of flour. It is given that X grams of flour were bought by Priya.

As per the given information, Claire bought 3/8 flour more than Priya.

Now, calculating the Y we get:

Y=(1+3/8)X

Y=11/8 times X

X/Y=11/8.

Therefore, Claire bought/Priya bought=11/8.

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y=-3x+1 2x+y=1
the answer is (0,1)

Answers

We can solve the system of equations:

y = -3x + 1

2x + y = 1

By substitution, and we will get the solution x = 0, y = 1.

How to solve the system of equations?

Here we have a system of linear equations:

y = -3x + 1

2x + y = 1

And we want to solve this.

To do so, we can use the substitution method, where we isolate one of the variables in one of the equations and then replace it on the other equation.

Here we can see that "y" is already isolated in the first equation, so we can replace that in the other equation, then we will get:

2x + y = 1

2x + (-3x + 1) = 1

Now we can solve that equation for x.

2x - 3x + 1 = 1

-x + 1 = 1

-x = 1 - 1

-x = 0

x = 0

To find the value of y, we can replace x by zero in any of the equations, we will get:

y = -3*0 + 1

y = 1

Then the solution of the system of equations is (0, 1).

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An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. Suppose that the mean income is found to be $36.6 for a random sample of 1012 people. Assume the population standard deviation is known to be $8.5. Construct the 80% confidence interval for the mean per capita income in thousands of dollars. Round your answers to one decimal place.

Answers

If an economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. the 80% confidence interval for the mean per capita income in thousands of dollars is: 36.3,  36.9.

How to find the confidence interval?

X = Sample mean = $36.6

σ =Population standard deviation = $8.5

n = Sample size = 1012

Z =Z score for 80% confidence interval = 1.2816

Using this formula

X ± Z σ/√n

Let plug in the formula

36.6 ±  1.2816 × 8.5/√1012

36.6 ±  0.34246

(36.6 -  0.34246) , (36.6 + 0.34246)

36.3,  36.9

Therefore the confidence interval is 36.3,  36.9.

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The data represent the grade point averages for 10 students.

3.1, 3.4, 3.1, 3.9, 4.0, 2.5, 2.8, 3.1, 2.9, 3.6

Which box plot represents the data?

Answers

Answer:

C

Step-by-step explanation:

C is the only one that matches the data.
C displays an appropriate radius for the data containing 3.1, 3.4, 3.1, 3.9, 4.0, 2.5, 2.8, 3.1, 2.9, 3.6

Help I don’t know how to do this

Answers

The difference of the given numbers after rounding to nearest thousand is 21,000.

What is the rounding off numbers?

Rounding a number means the process of making a number simpler such that its value remains close to what it was. The result obtained after rounding off a number is less accurate, but easier to use. While rounding a number, we consider the place value of digits in a number.

Given that, 33,167-12,052.

Rounding the number 33,167 to the nearest thousand is 33,000.

Rounding the number 12,052 to the nearest thousand is 12,000.

Now, the difference is

33,000-12,000 =21,000

Therefore, the difference is 21,000.

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Which equations have no solution? Select all that apply

Answers

The equations with no solution are Options B, E and F

What is an algebraic expression?

An algebraic expression can be described an expression that is composed of variables, terms, coefficients, factors and constants.

These expressions are also made up of arithmetic or mathematical operations such as;

SubtractionAdditionMultiplicationBracketDivisionParentheses

From the equations give, we have;

-2x + 4 = 2x + 4

collect like terms

-2x -2x = 4 - 4

subtract like terms

-4x = 0

x = 0

3x - 12 = 3(x -4) - 1

3x - 12 = 3x - 12 - 1

collect like terms

3x - 3x = -12 + 12

add or subtract like terms

0 = 0

Hence, the equations are Options B, E and F

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Solve for the matrix X if AX(D+BX)^(−1)=C. Assume that all matrices are n×n and invertible as needed.

Answers

We will get the solution of the matrix X after completing the calculations as: [tex]$$\mathrm{X}=(\mathrm{A}-\mathrm{CB})^{-1} \mathrm{CD}$$[/tex]

If and only if another matrix B of the same dimension exists, such that AB = BA = I, where I is the identity matrix of the same order, then matrix A of dimension n x n is said to be invertible. The inverse of matrix A is known as matrix B.

If and only if another matrix B of the same dimension exists, such that AB = BA = I, where I is the identity matrix of the same order, then matrix A of dimension n x n is said to be invertible. The inverse of matrix A is known as matrix B.

We have the matrix: [tex]$$\mathrm{AX}(\mathrm{D}+\mathrm{BX})^{-1}=\mathrm{C}$$[/tex]

Now, multiplying (D+X) on both sides of the equation,

We will get it as:

[tex]\mathrm{AX}(\mathrm{D}+\mathrm{BX})^{-1}(\mathrm{D}+\mathrm{BX})=\mathrm{C}(\mathrm{D}+\mathrm{BX})[/tex]

AX1=CD+CBX

AX=CD+CBX

AX-CBX=CD

(A-CB)X=CD

[tex]\mathrm{X}=(\mathrm{A}-\mathrm{CB})^{-1} \mathrm{CD}[/tex]

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Breast-feeding mothers secrete calcium into their milk. Some of the calcium may come from their bones, so mothers may lose bone mineral. Researchers measured the percent change in mineral content of the spines of 47 mothers during three months of breast-feeding.6Here are the data:
Blend Images/Superstock
(a)
The researchers are willing to consider these 47 women as an SRS from the population of all nursing mothers. Suppose that the percent change in this population has standard deviation ? = 2.5%. Make a stemplot of the data to verify that the data follow a Normal distribution quite closely. (Don

Answers

To create a stemplot, we first need to separate the data into "stems" and "leaves." Each stem represents the first digit(s) of each data point, while each leaf represents the last digit(s). For example, if the data point is 12.3, the stem would be 12 and the leaf would be 3.

To make a stemplot, the data should be arranged in increasing order, and then separated into stems and leaves.

STEMPLOT OF THE DATA

However, you can use the data given and arrange it in increasing order and separate it into stems and leaves to make a stemplot. A stemplot is a good way to check if the data follow a normal distribution quite closely, the more the data is spread out and the more symmetric it is, the more likely it is to follow a normal distribution.

Also, it is important to mention that from the given data, it is not possible to conclude if the percent change in this population has standard deviation of 2.5%. This parameter can only be estimated from a sample if it follows a normal distribution which is not clear from the given data.

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John & James each deposit $2,000 into separate bank accounts. Their accounts each accrue interest annually as shown in the tables below.
Part A.
Part B.

Answers

a) The functions are classified as follows:

John: Linear function.James: Exponential function.

b) After seven years, John has $1,666.36 more in his balance than James.

How to classify the functions?

A function is classified as exponential if when the input variable is changed by one, the output variable is multiplied by a constant.

Hence James' function is exponential, as:

3456/2880 = 2880/2400 = 2400/2000 = 1.2.

The definition of the function is given as follows:

Ja(x) = 2000(1.2)^x.

Considering the initial balance of 2000.

A function is classified as linear if when the input variable is changed by one, the output variable is increased/decreased by a constant.

Hence John's function is classified as linear, as:

3500 - 3000 = 3000 - 2550 = 2550 - 2000.

The definition of the function is given as follows:

Jo(x) = 2000 + 500x.

The balances after seven years are given as follows:

James: Ja(7) = 2000(1.2)^7 = $7,166.36.John: Jo(7) = 2000 + 500(7) = $5,500.

Hence the difference is of:

7166.36 - 5500 = $1,666.36.

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Abe can paint a room in 4 hours, and George can paint the same room in 5 hours. They enlist the help of their friend Teddy who is a very speedy painter, as he can paint the room in only 2 hours. All three start painting, but Teddy calls it quits after one hour, leaving Abe and George to finish the job. How many hours does it take until the room is painted

Answers

It would take time of  3 hours for Abe and George to finish the job, for a total of 4 hours.

Abe: 1 hour

George: 1 hour

Teddy: 1 hour

Abe + George: 3 hours

Total time: 4 hours

Abe, George and Teddy all started painting the room, with Teddy being the fastest, as he could complete the job in 2 hours. However, Teddy stopped after one hour, leaving Abe and George to finish the job. It would take Abe and George 3 hours to finish the job, as they both started with 1 hour and each had to then do the remaining 2 hours of the job. Therefore, it would take a total of 4 hours to paint the room, with Abe's and George's contributions being 1 hour each and Teddy's being 1 hour.

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8. How many randomly selected employers (minimum number) must we contact in order to guarantee a margin of error of no more than 4% (at 95% confidence)?.

Answers

You need 38 randomly selected employers (minimum number) must we contact in order to guarantee a margin of error of no more than 4% (at 95% confidence).

To determine the minimum number of employers you need to contact in order to guarantee a margin of error of no more than 4% (at 95% confidence), you can use the following formula:

n = (Z² * p * (1-p)) / e²

Where:

n is the minimum sample size requiredZ is the standard score for the desired level of confidence (1.96 for 95% confidence)p is the estimated proportion of the population that has a certain characteristic (e.g. a certain salary range)e is the margin of error you are willing to accept (4% in this case)

So, for example, if you estimate that 50% of the employers you are interested in have a certain characteristic (p=0.5) and you want to have a margin of error of no more than 4% (e=0.04), you would need to contact at least 38 employers (n=38).

Keep in mind that this formula assumes a simple random sample, meaning that every employer in the population has an equal chance of being selected. If you are using a different sampling method, the formula for determining the minimum sample size may be different.

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If you estimate that 50% of the employers you are interested in have a certain characteristic (p=0.5) and you want to have a margin of error of no more than 4% (e=0.04), you would need to contact at least 38 employers (n=38).

Now, According to the question:

Finding Sample Size for Estimating a Population Proportion

We use the formula :

n = [tex](\frac{z^*}{M} )^2p(1-p)[/tex]

We use p = p (bar)

M is the margin of error

p(bar) is an estimated value of the proportion

We want to construct a 95% confidence interval for p with a margin of error equal to 4%.

Because there is no estimate of the proportion given, we use p(bar) = 0.50 for a conservative estimate.

For a 95% confidence interval, [tex]z^*[/tex] = 1.960

n = [tex](\frac{1.960}{0.04} )^2(0.5)(1-0.5)[/tex] = 600.25

This is the minimum sample size, therefore we should round up to 601. In order to construct a 95% confidence interval with a margin of error of 4%, we should obtain a sample of at least n = 601.

if you estimate that 50% of the employers you are interested in have a certain characteristic (p=0.5) and you want to have a margin of error of no more than 4% (e=0.04), you would need to contact at least 38 employers (n=38).

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c. The ratio of teachers to male students to female students in a school is 3:17:18. If the total number of students in the school is 690, determine the number of teachers in the school.​

Answers

Using the concept of ratios and proportions and with the provided ratio and total number of students, The answer is 55 .

What is a ratio?

A ratio is a way of comparing two or more quantities by using division. It is a way of expressing a relationship between numbers, typically represented by a fraction. The numbers being compared are called the "terms" of the ratio. For example, a ratio of 3:5 compares the value of 3 to the value of 5. It can also be written as 3/5. Ratios can be used to compare many different types of quantities, such as lengths, weights, or time. Ratios are also used to express the relationship between different parts of a whole, for example, the ratio of girls to boys in a class, or the ratio of water to flour in a recipe.

What is a proportion?

A proportion is a statement that two ratios are equivalent. It is an equation that compares two ratios to see if they are equal. Proportions are written in the form of "a/b = c/d" where a, b, c, and d are numbers. For example, "3/5 = 6/10" is a proportion because it states that the ratio of 3 to 5 is equal to the ratio of 6 to 10. A proportion can also be used to find a missing value when we have a proportion and the value of three of the terms. This method is called cross-multiplication.

3x+17x+18x = 690

x=690/38

teacher number = x*3 = 690/38 * 3 = 55

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7. f(x) = 5√x + 4
what’s the domain and range

Answers

The domain and range of f(x) = 5√x + 4 are

[0, ∞) and [4, ∞).

What is a function?

function is a relationship between inputs where each input is related to exactly one output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

f(x) = 5√x + 4

If we take the negative value of x it becomes an imaginary number as

√-1 = i.

Thus x can never be a negative value.

The domain of the function.

= [o, ∞)

The value of f(x) when x = 0 to ∞ is the range of f(x).

f(0) = 5 x 0 + 4 = 4

f(1) = 5 + 4 = 9

The f(x) value will increase as x increases.

So,

The range of f(x) is [4, ∞}

Thus,

The domain of f(x) is [0, ∞).

The range of f(x) is [4, ∞).

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What is the argument of negative 5 startroot 3 endroot 5 i? −150° −30° 30° 150°

Answers

Argument of the given complex number (-5√3 +  5i) will be 150°.

The argument of a complex number is defined as the angle inclined from the real axis in the direction of the complex number represented on the complex plane. It is denoted by “θ” or “φ”. It is measured in the standard unit called “radians”.

Argument of a complex number:

If a complex number if Z = (x + yi),

Imaginary part = y

real part = x

Argument of the complex number will be,

arg z = [tex]\text{tan}^{-1}(\frac{y}{x})[/tex]

Given in the question,

Imaginary number 'z' = -5√3 + 5i

Imaginary pat 'y' = 5

Real part 'x' = -5√3

Therefore, arg z = [tex]\frac{y}{x}=\text{tan}^{-1}(\frac{5}{-5\sqrt{3} })[/tex]

[tex]arg z = \frac{y}{x}=\text{tan}^{-1}(\frac{-1}{\sqrt{3} })[/tex]

Since, tan is negative in IInd quarter,

arg z = (180 - 30)° = 150°

Therefore, argument of the given complex number will be 150°

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The argument of the complex number -5√3 + 5i is 150°.

The argument of a complex number is the angle between the positive real axis and the line connecting the origin to the complex number in the complex plane.

The complex number -5√3 + 5i can be written in polar form as rcos(θ) + irsin(θ), where r is the magnitude of the complex number and cos(θ) + isin(θ) is the complex number represented in polar form.

We can find the argument of - 5√3 + 5i by using the inverse tangent function to find the angle between the positive real axis and the line connecting the origin to the complex number in the complex plane. We can do this by dividing the imaginary part of the complex number by the real part:

arg(-5√3 + 5i ) = tan⁻¹(5 / (-5√3))

= tan⁻¹(-1/ √3)

= 150°

Therefore, the argument of -5√3 + 5i is 150 degrees.

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A triangle has two sides of length 17.6 and 17.9. What compound inequality describes the possible lengths for the third side, x?

Write it in a compound equality

Answers

The compound inequality that describes the possible lengths for the third side, x, is -0.3 < x < 35.5.

How to calculate the compound inequality?

The triangle inequality states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

We can use this to write a compound inequality for the possible lengths of the third side, x. First, we need to consider the case where x is the longest side:

17.6 + 17.9 > x

35.5 > x

Then, we need to consider the case where x is one of the smaller sides:

x + 17.9 > 17.6

x > 17.6 - 17.9

x > -0.3

Therefore, the compound inequality that describes the possible lengths for the third side, x, is -0.3 < x < 35.5.

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of the rectangle at right is 42 cm. of the triangle is 36 cm. Find the The perimeter The perimeter values of x and y.​

Answers

Therefore , the solution to the given problem of Perimeter comes out to be Perimeter = 2(9+12) = 42 and diagonal = √(9² + 12²) = √225 = 15 and So the sides are 9 and 12.

Define perimeter.

The complete length of a shape's boundary is referred to as the perimeter in geometry. A shape's perimeter is calculated by adding the lengths of all of its sides and edges.


Here,

L+W equals 21, thus we know that perimeter is 42.

Diagonal = 15, thus we know L2 + W2 = 152.

Let's create a quadratic equation and define L as 21-W:

(21-W)² + W² = 15² 441 - 42

441 - 42W + W² + W² = 225

2W² - 42W + 216 = 0

W² - 21W + 108 = 0

(W-9)(W-12) = 0

W = 9 or 12

Therefore , the solution to the given problem of Perimeter comes out to be Perimeter = 2(9+12) = 42 and diagonal = √(9² + 12²) = √225 = 15 and So the sides are 9 and 12.

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How do you find the measure of an angle in a triangle isosceles?

Answers

To find the measure of an angle in a triangle that is isosceles, you can use the fact that the two equal sides of the triangle are congruent to each other.  The measure of each of these angles can be found by subtracting the measure of the third angle from 180 degrees.

Determine which two sides of the triangle are equal in length (these are called the "congruent sides").

Find the measure of the angle opposite one of the congruent sides. This angle is called the "base angle."

Subtract the measure of the base angle from 180 degrees. This will give you the measure of the other two angles in the triangle (since the three angles in any triangle must add up to 180 degrees).

For example, if the measure of the base angle is x degrees, then the measure of the other two angles would be (180-x) degrees.

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The measure of angles in an isosceles triangle can be found using the Triangle Angle Sum Theorem. This theorem states that the sum of the angles in any triangle is 180 degrees. Therefore, if you know two of the angles in the triangle, you can find the third angle by subtracting the sum of the two known angles from 180.

To find the measure of an angle in a triangle isosceles, you can use the Triangle Angle Sum Theorem. This theorem states that the sum of the angles in any triangle is 180 degrees. Therefore, if you know two of the angles in the triangle, you can find the third angle by subtracting the sum of the two known angles from 180.

Let's look at an example. Suppose you have an isosceles triangle and you know that two of its angles measure 50 degrees and 60 degrees. To find the measure of the third angle, you would subtract 110 (the sum of the two known angles) from 180. This gives you 70 degrees as the measure of the third angle.

In addition to the Triangle Angle Sum Theorem, you can also use the Isosceles Triangle Theorem to find the measure of an angle in an isosceles triangle. The Isosceles Triangle Theorem states that the angles opposite the two equal sides of an isosceles triangle are equal. This means that if you know one of the angles in the triangle, you can determine the measure of the other two angles, since they will both be equal to the measure of the known angle.

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This year, a beauty magazine had 620 subscribers. That is 69% fewer than they had last year,
before its parent company made some changes. How many subscribers did the magazine
have last year?

Answers

Answer: 2000

Step-by-step explanation:

Let X be the number of subscribers the magazine had last year.

The magazine had 69% fewer subscribers this year than it had last year, which means that the number of subscribers this year is 100% - 69% = 31% of the number of subscribers last year.

We can set up the following equation to represent this situation:

620 = 0.31X

To solve this equation for X, we can divide both sides by 0.31:

X = 620 / 0.31

This simplifies to:

X = 2000

Therefore, the magazine had 2000 subscribers last year.

I will mark you brainiest
If the answer is correct

Answers

It took dakota two days. He walked 16000 and 20000!

Ekaterina's favorite expression is 4x – 4. Alban's favorite expression is 8x – 24. What value of x makes these two expressions equal?

Answers

Answer:

x = 5

Step-by-step explanation:

to find the value of x that makes the expressions equal, equate them

8x - 24 = 4x - 4 ( subtract 4x from both sides )

4x - 24 = - 4 ( add 24 to both sides )

4x = 20 ( divide both sides by 4 )

x = 5

then

4x - 4 = 4(5) - 4 = 20 - 4 = 16

8x - 24 = 8(5) - 24 = 40 - 24 = 16

the value x = 5 makes the 2 expressions equal

Which of the following numbers is not a solution of 6x-11>=4x-13?
a. -2
b. -1
c. 0
d. 1

Answers

The number that is not a solution of the inequality

6x - 11 ≥ 4x - 13

Is x = -2, option a.

Which number is not a solution of the inequality?

We want to see which of the given numbers is not a solution of the inequality below:

6x - 11 ≥ 4x - 13

To check that, we just need to evaluate the inequality in the given values and see for which value we have a false inequality.

For example, from the first value we will get:

x = -2

6*-2 - 11 ≥ 4*-2 - 13

-12 -11 ≥ -8 - 13

-23 ≥ -21

This is false, thus this is the correct option.

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