The ratio of boys to girls in the 9th grade is 7 to 9. There are 218 girls. Set up a proportion to model this information.

Answers

Answer 1

Answer:

7/9=b/218

Step-by-step explanation:


Related Questions

how would i solve this

Answers

Note that the expression when simplified translates to x = -6 (Option 1)

What is a math expression?

An expression or mathematical expression is a finite collection of symbols that is well-formed according to context-dependent norms.

√(x + 14) - √2x + 5) = 1

To solve this, we must square all elements on both sides of the equation. That is:

√(x + 14)² -  √(2x + 5)² = 1²

⇒ x + 14 + 2x + 5 = 1

Collect like terms to arrive at:

3x = -18

x = -18/3

x = -6

Thus the answer to the above expression is x= -6

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HELP THIS WAS DUE YESTERDAY!!!!!!!!!!!!
The possible outcomes for rolling one six-sided die are shown below.
Molly rolled a six-sided die 20 times. The numbers she rolled are shown below.
What is the probability that Molly will roll a four on her next roll?
A.1/6
B.1/5
C.1/3
D. 1/4

Answers

The answer is A
6 sides on a die

60% of tudent like wimming, 40% like dancing, 20% of tudent that like wimming like dancing , how many tudent don't like wimming

Answers

So, 40% of students don't like swimming.

We know that 60% of students like swimming, and 40% of students like dancing. We also know that 20% of students that like swimming also like dancing.

First, we can find the number of students that like swimming and dancing by multiplying the percentage of students that like swimming by the percentage of students that like dancing and also like swimming:

20% * 60% = 12%

This means that 12% of students like both swimming and dancing.

To find the percentage of students who don't like swimming, we can subtract the percentage of students who like swimming from 100%.

100-60 = 40%

So, 40% of students don't like swimming.

It's important to note that if the problem had provided a total number of students this information would have been useful to calculate the exact number of students who don't like swimming.

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Is Y =- 5x 3 linear or nonlinear?.

Answers

The equation y = -5x + 3 is a linear equation.

We know that a linear equation in two variables is nothing but an equation that can be written in the form Ax + By = C,  where A and B are real numbers and A ≠ 0, B ≠ 0.

The above form of equation is called the standard form of a linear equation in two variables.

Here we have been given an equation y = -5x + 3

y = -5x + 3

y + 5x = -5x + 3 + 5x             ........(Add 5x to each side)

y + 5x = (-5x + 5x) + 3           .......(Associative property of addition)

y + 5x = 0 + 3

5x + y = 3                              ........(Commutative property of addition)

Since we can write it in the standard form, Ax + By = C, then we have a linear equation.  

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How do you find the x-intercept and point of a quadratic equation?.

Answers

Answer:

Step-by-step explanation:

plug in a 0 for y and simplify the equation

because 0*(constant of y)=0, so

x*(constant of x)=something, so

something/(constant of x)=x

ans is (x, 0)

LInda, Laura, Loraine, and Lila run on a relay team. Each run 0. 5 kilometer. How far doe the team run altogether?

Answers

Answer: Linda, Laura, Loraine, and Lila run 2 kilometers altogether.

Step-by-step explanation:

0.5 + 0.5 + 0.5 + 0.5 = 2 km

I hope this helps!

Sol divided the following polynomial and made a mistake (x³ + 8x - 16) + (x-2)​

Answers

There are an equal number of roots as long as there are x powers. As a result of the four xs, the polynomial in this situation has four roots.

How can the roots of a polynomial be found given its factored form?

Finding the roots of the polynomial will allow you to solve it. P(x) = 0 is obtained by setting each factor to 0 and then calculating x. The polynomial equation can be solved by factoring. For every factor, a value of 0 should be used. 2x4 = 0; (x - 6) = 0; (x + 1) = 0 the answer to x, please.

It's important to note this even if there are only two genuine roots. The final two roots of this equation, which contain the integer I, are not real because I appears in both of them.

There are an equal number of roots as long as there are x powers. As a result of the four xs, the polynomial in this situation has four roots.

The complete question is,

Calculate the overall number of roots for each polynomial function using the factored form. f (x) = (x + 2)(x - 1) (x - 1) (x - 1) [x - (4 + 3i)] [x - (4 - 3i)].

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A city planner wants to build a road perpendicular to D Street. What should be the slope of the new road?

Answers

The slope of the new road is zero.

What is Slope?

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx where, m is the slope

Given:

Take points from the Graph (5, 0) and (5, 4).

Slope of a line = m = tanθ

where θ is the angle made by the line with the x−axis.

For a line parallel to y−axis ,θ= π/2.

∴m = tan π/2 = undefined

The new road will therefore have 0° of inclination if it is perpendicular to D street because if they are perpendicular and D street is vertical, the new road is level and has 0° of inclination.

An horizontal line now has zero slope.

The new road has a zero slope as a result.

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Simplify the expression
using only positive exponents.

Answers

The expression is simplified to y⁹/12x². Option A

What are index forms?

The index form of a number can be described as that number written as an exponential expression.

It is also seen as a single number that is raised to another number.

Other names for index forms are standard forms and scientific notation.

From the information given, we have that;

3x^⁻⁴y⁵/(2x³y⁻⁷)⁻²

expand the exponential bracket of the denominator by mutiplying the values

3x^⁻⁴y⁵/2x⁶y⁻¹⁴

Now, divide the expression into parts, we have;

3/-4 (x^⁻⁴y⁵/2x⁶y⁻¹⁴)

Since we are finding the quotient, subtract the exponents of the denominator from the numerators, we get;

3× -4(x⁻⁴⁺⁶y⁵⁻¹⁴)

Now, add or subtract the exponential values, we get;

-12(x⁻²y⁻⁹)

y⁹/12x²

Hence, the correct option is y⁹/12x²

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hep me with the question please!

Answers

Answer:

i can not see the question

Step-by-step explanation:

please upload a New photo

An investor invested a total of $3,200 in two mutual funds. One fund earned a 6% profit while the other earned a 4% profit. If the investor's total profit was $152, how much was invested in each mutual fund?

Answers

$1200 was invested at a mutual fund of 6% profit while $2000 was invested at a mutual fund of 4% profit

What is an equation?

An equation is an expression showing the relationship between numbers and variables.

Let x represented the money at 6% profit and y represent the money at 4% interest. A total of $3200 was invested, hence:

x + y = 3200    (1)

If the investor's total profit was $152, therefore:

0.06x + 0.04y = 152         (2)

From both equations:

x = 1200, y = 2000

$1200 was invested at 6% while $2000 was invested at 4%

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How do you find the sides of a 30 60 90 triangle?.

Answers

A 30-60-90 triangle is a special type of right triangle that has angles of 30 degrees, 60 degrees, and 90 degrees. It has the following properties:

The side opposite the 30-degree angle is half the length of the hypotenuse (the side opposite the 90-degree angle).

The side opposite the 60-degree angle is √3 times the length of the side opposite the 30-degree angle.

To find the sides of a 30-60-90 triangle, you can use these properties.

If you know the length of the hypotenuse (the side opposite the 90-degree angle), you can find the length of the other two sides using the following formulas:

The side opposite the 30-degree angle: hypotenuse / 2

The side opposite the 60-degree angle: (√3) * (hypotenuse / 2)

If you know the length of one of the other two sides, you can use the above formulas to find the length of the hypotenuse and the other side.

For example, if you know the length of the side opposite the 30-degree angle, you can find the length of the hypotenuse by multiplying it by 2 and the length of the side opposite the 60-degree angle by multiplying it by √3

In summary:

The hypotenuse is always twice the length of the shorter leg.

The longer leg is √3 times the length of the shorter leg.

The hypotenuse is always the longest side in a 30-60-90 triangle.

What is the solution of the equation 2x y 5 and 3x 2y 4?.

Answers

Solving the 2 equations will give us the value of x to be -14 and that of y to be 33.

Here we have two equations

2x + y = 5 and 3x - 2y = 4

Now we will use the substitution method to solve the equations

The first equation is

2x + y = 5

or, y = 5 - 2x                                                         [1]

Let 3x - 2y = 4 be equation 2

Substituting the value obtained in equation [1] in [2] we get

3x - 2(5 - 2x) = 4

or, 3x - 10 + 4x = 4

or, x = -14                                                               [3]

Substituting the value of x obtained in equation [3] to equation [1] we get

y = 5 - 2(-14)

or, y = 5 + 28

or, y = 33

Hence, x = -14 and y = 33

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Complete Question

What is the solution of the equations 2x + y = 5 and 3x - 2y = 4?

ANSWER THE QUESTIONS WITH STEPS FOR BRAINLESS
the last answer choice on number 7 is (c) I don’t know

Answers

You can find the inverse of any function y=f(x) by reflecting it across the line y=x.

Hence, Option A is correct.

The inverse function is denoted by f-1 or F-1 if the function is denoted by f or F.In mathematics, an inverse function is a function that reverses the action of a function. The inverse of f is denoted if it exists and only if f is a bijective function.The function that "undoes" what f did can be defined as the inverse of f since it "acts on" numbers and transforms them. Alternatively put,A function that can change into another function is referred to as being inverse or anti.

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Please help this question is on my test and if u help me and it’s right I will memorize the answer u gave me. Btw 20 points

Answers

The expression for the width is x (b) The perimeter of the rectangle in terms of x is x +8

What is perimeter?

You should understand that the perimeter of a rectangle is the distance round the rectangle

The given parameters that will help us to understand and solve the question are

Length = 4 inwidth = xArea = 2x+24

Area = length * width

This implies that 2x +24 =4x

Collecting like terms =4 = 4x-2x

2x = 24

Therefore x = 24/2 = 12

b)  The perimeter is = L+W+L+W

Perimeter = 2L+w

Where W =x

Perimeter = 2(2x+24) +2(x)

The perimeter = 4x+48 +2x

Therefore the perimeter = 6x+48 or x+8

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an isosceles triangle of sides 100cm, 60cm, and 60 cm has a base angle f, find f

Answers

Answer:

33.56°

Step-by-step explanation:

Base angles of an isosceles triangle are equal.

Base is bisected by a line from top (vertex) of the triangle straight down to form a right angle.  Base, 100 cm, has 2 equal segments, 50 cm each.

Find h, height of the triangle:

h² = 60² - 50²

h = √1100 = 33.17

sin(f) = 33.17/60 = 0.553

m∠f = sin⁻¹(0.553) = 33.56°

What is a polynomial sum?.

Answers

Two polynomials simply mean to sum the coefficients of the same powers, if these situations occur. the result of adding two polynomials will always be another polynomial.

A polynomial is described as an expression that consists of variables, constants, and exponents, which might be mixed with the use of mathematical operations along with addition, subtraction, multiplication, and department (No division operation by a variable).

In arithmetic, a polynomial is an expression that includes indeterminates and coefficients, that entail best the operations of addition, subtraction, multiplication, and fine-integer powers of variables. An instance of a polynomial of an unmarried indeterminate x is x² − 4x + 7.

Polynomials are sums of phrases of the form k⋅xⁿ, in which okay is any wide variety and n is a positive integer. for example, 3x+2x-5 is a polynomial. advent to polynomials.

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list the sides of triangle MNP from least to greatest if m =64 degrees and n = 48 degrees



pls help

Answers

Answer:

Click or copy the link and that is the answer

https://www.leonschools.net/cms/lib/FL01903265/Centricity/Domain/3141/ch%205%20review%20answers.pdf

Step-by-step explanation:

hope it helps :)

mark me as brainliest!

if not try this (copy or paste)

mehttps://www.leonschools.net/cms/lib/FL01903265/Centricity/Domain/3141/ch%205%20review%20answers.pdf

Answer:MP, NP, MN

Step-by-step explanation:

Muic player A: y= 191x-32
Muic player B: y=-x^2200x20
A. On what day did the company ell the ame number of each player?
B. How many player were old on that day?

Answers

a. On the 13th day the company sold the same number of each player.

b. 2,451 players were sold on that day.

a. The day on which the company sold the same number of players can be calculated by equating the values of y that we have ;

y = 191x-32 and y = -x² + 200x + 20

Equating both, we have;

191x-32 = -x² + 200x + 20

⇒x² -200x + 191x-20-32 = 0

⇒x²-9x-52 = 0

⇒x²-13x + 4x -52 = 0

⇒x(x-13)+4(x-13) = 0

⇒(x-13)(x+4) = 0

⇒x = 13 or -4

as days cannot be negative, so we choose only x = 13

This means that the company sold equal numbers of players on the 13th day.

b. To get the number of players sold on that day, we select any of the y equations and substitute x = 13

Thus, y = 191x -32; 191(13) - 32 = 2,451 players

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The complete question is:

The equation below models the numbers of two portable music players (y) and days after both players were introduced (x).

Music player A: y=191x-32 and music player B: y=-x^2+200x+20

1. on what day(s) did the company sell the same number of each player?

2. how many players were sold on THAT day (use your answer from #1

find the value of x ​

Answers

Answer:

x = 73⁰

Step-by-step explanation:

all values show are measures of exterior angles

the sum of all exterior angles for any polgon is 360 degrees

to find 'x':

50 + 48 + 59 + x + x + 58 + 39 = 360

combine like terms:

2x + 214 = 360

2x = 146

x = 73

How do you calculate equivalent form?.

Answers

To calculate equivalent form of an algebraic expression we can use the following :

1) distributing property

2) factoring.

Two mathematical expressions are said to be equivalent if they yield the same result upon solving them. To represent equivalent form an equality (=) sign is used. 3(x + 2) and 3x + 6 are equivalent expressions because the value of both the expressions remains the same for any value of x. To calculate equivalent form by using Distributive Property :

Start with an algebraic expression. Let's take an example 2x(3y + 2).Distribute the multiple 2x throughout the rest of the equation. That is multiplying 2x by 3y and by 2, we get 6xy + 4x.This is our equivalent expression. It can be represent as equality : 2x(3y + 2) = 6xy + 4x.

To calculate equivalent form Using Factoring :

Identify the common factors in the expression. If possible divide the equation to find an equivalent expression.Let the expression 5xy + 4x, in this case, both numbers 4 and 5 are co-prime. As we see that there is common factor, x. Take the other common factors: x(5y + 4).

This gives you an equivalent form . Again, the equality form, 5xy + 4x = x(5y + 4). Thus, the required equivalent form is determined.

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What is the distance between the points 2 0 and (- 2 0?.

Answers

The required distance between given pair of points ( 2, 0 ) and ( -2,0 ) is equal to 4 units.

As given in the question,

Given pair of points in the coordinate plane is represented by the coordinates

( x₁ , y₁ ) = ( 2, 0 )

( x₂ , y₂ ) = ( -2,0 )

Apply the standard formula to calculate the distance between two pair of points in the coordinate plane is :

= √(x₂ - x₁ )² + ( y₂ - y₁ )²  

Substitute the values in the formula and calculate the distance between two pair of points :

= √ ( -2 - 2 )² + ( 0 - 0 )²

= √(-4)² + 0²

= √16

= 4

Therefore, the required distance between the given pair of points ( 2, 0 ) and ( -2,0 ) is equal to 4 units.

The above question is incomplete , the complete question is:

What is the distance between the pair of points (2, 0) and (-2, 0) ?

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Answer: The answer is 2

Step-by-step explanation:

Jacob walks 2/5 kilometres in 1/4 hour. what is jacobs speed in kilometres per hour?

Answers

Jacob's speed in kilometers per hour is equal to 8/5 kilometers per hour.

What is speed?

In Science, speed can be defined as the distance covered by a physical object or body per unit of time. This ultimately implies that, speed is a scalar quantity because it has magnitude but no direction.

Mathematically, the speed of a physical object or body can be calculated by using this formula;

Speed = distance/time

Substituting the given points into the speed formula, we have the following;

Speed = 2/5/(1/4)

Speed = 2/5 × 4/1

Speed = 8/5 kilometers per hour.

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Is 2x 3y 7 a linear equation?.

Answers

Yes, 2x -3y =7 is a Linear equation as the highest power of the variable is linear which is one. Although it has two variables both have one power.

Linear equations are those which have the highest power of variable as one. But it can have n number of different variables. This given equation is called a linear equation with two variables.

Moreover, any expression is called an equation when the expression is equated to some value means the equation is equal to("=") to some other expression, Number, or Zero. And here 2x+3y is being equated to 7 which is a number, So the given expression is an equation.

However if the variables x and y both came together then it will not be linear as x*y will make the power two as one of x and one of y, Which w=makes the highest power of expression two.

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Please help me ASAP...

Answers

The equation that has one solution will be 4m + 5 = 25. Then the correct option is B.

The equation that has infinitely many solutions will be 2x + 7 - 2x = 7. Then the correct option is C.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

If the variable and constant get eliminated then the equation has infinitely many solutions. If the variable gets eliminated then the equation has no solution.

7. Let's check option B, then we have

4m + 5 = 25

4m = 20

m = 5

8. Let's check option C, then we have

2x + 7 - 2x = 7

2x - 2x = 7 - 7

The equation that has one solution will be 4m + 5 = 25. Then the correct option is B.

The equation that has infinitely many solutions will be 2x + 7 - 2x = 7. Then the correct option is C.

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Follow this link to view Juan’s work. Critique Juan’s work by justifying correct solutions and by explaining any errors he made. For any errors made, provide and explain a correct response. Be sure to explain each key aspect of the graph.

Answers

Juan's observations are correct, but his incorrect observation is asymptote: x = 0

What is an exponential function?

An exponential function is a mathematical function of the following form: f(x) = aˣ. where x is a variable, and a is a constant called the base of the function.

Given is a graph of an exponential function.

Juan's observations are :-

Initial value: –3

Base: 3

Asymptote: x = 0

Domain: {x | x > 0}

Range: {y | all real numbers}

Studying the graph, we can say his observations are correct but his comment on Asymptote: x = 0 is wrong because, the equation of the horizontal asymptote of the graph of is y = 0, which is the x-axis.

Other than, Asymptote: x = 0, all his comments are true.

Hence, the incorrect observation is asymptote: x = 0

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The shaded triangle has an area of 16 ft².
Find the area of the entire rectangle.
Be sure to include the correct unit in your answer.
ft ft²
X
ft

Answers

The area of given figure is 32 ft².

The size of a patch on a surface is determined by its area. Surface area refers to the area of an open surface or the boundary of a three-dimensional object, whereas the area of a plane region or plane area refers to the area of a form or planar lamina.

Area is the entire amount of space occupied by a flat (2-D) surface or an object's shape. On a sheet of paper, draw a square using a pencil. It has two dimensions. The area of a shape on paper is the area that it occupies.

Given,

the shaded are of shape is 16 ft²

As, twice the area of triangle equals the area of rectangle

⇒ (16 + 16) ft²

32 ft²

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Complete Question -

The monthly cot of driving a car depend on the number of mile driven. Lynn found that in May it cot her $428 to drive 460 mi and in June it cot her $494 to drive 680 mi. (a) Expre the monthly cot C a a function of the ditance driven, d, auming that a linear relationhip give a uitable model

Answers

Rate does Lynn's cost increase for every additional mile she drives will be $0.25

The following is the linear relationship between the two variables:

Eq. 1: C f(d) = m*d + k

where m and k are evaluation-needed constants

Find m: We'll determine the angle of the line connecting the points (480, $380) and (800, $460).

Line slope (m) equals $0.25 per mile

Consider one of the two positions and enter (480,$380) in Eq 1 to find k.

k = 380 - 0.25(480) = $260

The line's equation is C f(d) = 0.25*d + 260.

This equation may be used to plot the graph for section a.

The rate of cost per mile is determined by the graph's slope when the units are scrutinized; as a result, $0.25

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What is the solution of the system of equations y 4x 4 y 3x 3?.

Answers

After solving, the solution of the pair of equation is (-1, 0).

In the given question, we have to find the solution of the system of equations y = 4x + 4 and y = -3x - 3.

The given equations are:

y = 4x + 4.....................(1)

y = -3x - 3.....................(2)

Now putting the value of y from equation 1 to the equation 2

4x + 4 = -3x - 3

Subtract 4 on both side, we get

4x = -3x - 7

Add 3x on both side, we get

7x = -7

Divide by 7 on both side, we get

x = -1

Now putting the value of x in equation 1

y = 4(-1) + 4

y = -4 + 4

y = 0

Hence, the solution of the pair of equation is (-1, 0).

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The complete question is:

What is the solution of the system of equations y = 4x + 4 and y = -3x - 3?

I drove 10 mile north 14 mile eat 16 mile north 2 mile eat 4 mile north how far am I

Answers

The total distance traveled is 46 miles.

Distance Traveled:

Distance traveled is the path covered by a body to get from a starting point to an endpoint in a certain period of time, at a certain velocity. Time and velocity play a major role in measuring the distance traveled. The distance travel formula is: d = v x t

To determine the total distance you have traveled, you will need to add up all the distances you have driven in each direction.

You drove 10 miles north, 14 miles east, 16 miles north, and 2 miles east, 4 miles north.

10 miles north + 14 miles east + 16 miles north + 2 miles east + 4 miles north = 46 miles

So, you have traveled 46 miles.

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What does the excerpt from the Epic of Gilgamesh say happened to Enkidu?. aside from chlorophyll, there are other pigments involved in photosynthesis which give other colors to leaves. they are ____________, ______________, and ______________. angelique refuse de d epouser diafoirus citez les argument qu`elle oppose a son pere a thomas dafoirus et a belin livre le malade imaginaire What was the main reason the United States was attacked at Pearl Harbor?. Give me the answer, please the sum of two vectors has the greatest magnitude when the angle between these two vectors is and why What are the 3 parts of group discussion?. To determine your level of net worth, subtract your liabilities from your positive net equity. True or False? Find the correct representation for the slope of the tangent line to the curve cosxy + 3sin2x + 2y.a. sin xy (dx/dy +y) + 6 cos x+2b. -sin xy (dx/dy +y) + 6 sin x cos x+ (2dy/dx)c. -sin (xy) (x dy/dx) + 6 sin x + 2d. sin (xy dy/dx +y) + 6cos x+ 2 dy/dx Kazuko says the expressions 5x and 6 - x are equivalent expressions, because youcan substitute 1 for x in both expressions and get the same result. Is Kazuko'sreasoning correct? Explain. A rectangles length is 8 more than its width. Express its perimeter in terms of its width. The massa cube, M (kg),is proportional to the cube ofthe length of its edge,L (m).The massthe cube is 40kg when the length of itsedge is 35 cm.Work out M (to 2 DP) when L=0.6 mThanks Read the following excerpt from President John F. Kennedy's "We Choose to Go to the Moon" speech. Then, answer the question that follows. |do say that space can be explored and mastered without feeding the fires of war, without repeating the mistakes that marn has mado In extending his writ around this globe of ours Which rhetorical device does Kennedy use to support his argument? O Antithesis: he is contrasting space with fires O Figurative language: he is using alliteration and an idiom to calm the audience about the space race O Irony: he is saying the opposite of what he means about fires O Rhetorical question: he issues a statement about fire in the form of a question Suppose brian is in the market for a used textbook and the campus bookstore is having a sale. If the initial price of the used book is $77 and the discounted price is $59 , what is the percentage change in the book price? round your answer to two places after the decimal. One major issue with research regarding the implication of the neuroendocrine system in the development of Eating disorders is the Lack of ability to measure neuroendocrine functioning The high comorbidity between eating disorders and depression Inability to determine if the disruption caused the disorder or if the eating disorder caused a disruption in the neuroendocrine system The fact that there is a high senetic component within eating disorders 1 point 8 divided by 0 point 6 What are some primary differences between a stage performance and a film?. Group 1MercuryVenusJupiterGroup 2EarthMarsSaturnUranusNeptunePlutoWhich of the following is true about all the planets in group one when compared tothose in group 2?a) They are larger planetsb) They are closer to the sunc) The Sun rises from the west of these planetsd) They have fewer variations across the seasons. The Saver's Credit may be claimed by eligible taxpayers who make a contribution to a qualified retirement fund. Which one of these savings vehicles do NOT qualify for the Saver's Credit? What was one important academic skill?.