Please Help! A bridge support is represented by the top half of an​ ellipse, shown in the figure to the right. The point​ Q, which is the center of the​ ellipse, is at the origin. The bridge support is 18 feet high at its center and it is 25 feet from either end of the bridge to the center. Find the equation that best describes the ellipse.

Answer:

0

Step-by-step explanation: 2x+8=2x+6 --> 8=6

8 cant be equal to 6 so this equation is wrong and has no solution.

Answer:

8/7

Step-by-step explanation:

2/7 *4/1 = 8/7

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Answer:

Step-by-step explanation:

First multiply 9x3

=[tex]27xy^4x^3y[/tex]

give the terms that dont have a exponent a 1

=[tex]27x^1y^4x^3y^1[/tex]

Multiply terms with the same base

[tex]27x^{1+3} y^4x^3y^1[/tex]

Multiply terms of same base

[tex]27x^{1+3}y^{4+1}[/tex]

Just add all the exponents

[tex]27x^{4}y^{5}[/tex]

Answer:

The third one

Step-by-step explanation:

x = 130°

If parallel lines are cut by a transversal, alternate exterior angles will be congruent.

Answer:

130 degres

they lie on the same line so the angles are equal

Answer:

-1

Step-by-step explanation:

First you do what's inside the brackets,

-3 + 4 = 1

Now we have 1 + a = 0

so we rearrange for a

0 - 1 = -1

a = -1

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2^3 + 2^2 x 2 + 6 - 2^1 x 2^0 - 1

2³+2³+6-2×1-1

2×2³+6-2-1

2⁴+6-2-1

16+6-2-1

19

Answer:

c

Step-by-step explanation:

i think it's 1

-2-2=0.5(3-5)

OR (-2-2)=1/2(3-5)

Answer:

Radius = 7cm , Circumference = 43.96cm

Step-by-step explanation:

To find the radius, you divide the diameter by 2.

14 / 2 = 7cm

To find the circumference, you multiply 兀 ( 3.14 ) with the diameter

兀d = 兀 x 14 = 43.96cm

Answer:

1/8

Step-by-step explanation:

x-8y=-1

First, put the equation in slope intercept form ( y= mx+b where m is the slope and b is the y intercept)

-8y = -x-1

y = 1/8x +1/8

The slope is 1/8 and the y intercept is 1/8

The slope for parallel lines is the same for all parallel lines

1/8

Step-by-step explanation:

1 / 9 is the correct answer

Answer:

The answer is 1/9

Step-by-step explanation:

Hope it helps.

Answer:

answer is b took the test n dude

Step-by-step explanation:

Answer:

[tex]y \geq2x - 5[/tex]

Step-by-step explanation:

First off, we can tell that the line has a positive slope because it's going upwards to the right. To find the slope of the line exactly, we will start at the first given point and count the units until we get to the next point.

(Remember that slope is written as rise/run.)

So the slope is 2/1 or just 2.

Next, we can tell that the y-intercept is -5, because that's where the line crosses the y-axis.

Additionally, since the line is solid, the inequality sign will either be the "greater than or equal to" sign, or the "lesser than or equal to" sign. In order to tell which one to use, we will look at the shaded area. Since the shaded area is above the line, y will be "greater than or equal to" the line.

So to put it together: The line written in slope-intercept form, is

[tex]y \geq2x - 5[/tex]

Hope this helps you :)

Answer:

Step-by-step explanation:  

     10 cents x 7 cents= 70 cents

     5 cents x 3 cents= 15 cents    

     70

  + 15

     85

Answer:

Go to demose and plug it in it worked for me but it wont let me out a link in my awnser.

Answer:

1. 50

2. 130

3.130

Step-by-step explanation:

50 is a vertical angle to 1. so it has the same value.

a line is 180 so 180-50=130

Answer:

5, 1.4

Step-by-step explanation:

you just take a value of x with its matching value of y and divide it

Answer:

Step-by-step explanation:

Let width = w

Length = w - 7

Perimeter = 2*(length + width)

2*(w-7 + w) = 50

2* (2w - 7) = 50

2*2w - 7*2 = 50

4w - 14 = 50

Add 14 to both the sides

4w = 50+ 14

4w = 64

Divide the entire equation by  4

w = 64/4

w = 16 units

Length = 16 - 7 = 9 units

Answer:

-24 does not equal 0, so therefore there's no solution.

Step-by-step explanation:

In order to get x by its self, you first have to subtract 6x on both sides to get -24 = 0. Next divide 12 on both sides to get -2 = x.

Hope this helps you :)

(Answer has been edited, because I realized I did the first step wrong, my bad.)

Answer:

slope = 3/8

Step-by-step explanation:

slope is rise over run

use the points (-4,1) and (4,4)

going up 3 and over 8 will connect you to the other point

Let x = gallons consumed by car 1

Let y = gallons consumed by car 2

We set up our equations:

35x+40y = 1850        eq1

x+y = 50                   eq2

Substituting eq 2 into eq 1,

35x+40(50-x) = 1850

35x+2000-40x = 1850

-5x+2000 = 1850

-5x = -150

  x = 30

Substitute value of x into eq 2.

x+y = 50

30+y = 50

     y = 20

Car 1 consumes 30 gallons of gas.

Car 2 consumes 20 gallons of gas.

Answer:

Step-by-step explanation:

- 38d - 57 ≥ - 19d + 76

- 38d + 38d - 57 - 76 ≥ - 19d + 38d + 76 - 76

-133 ≥ 19d

-133/19 ≥ 19/19d

-7 ≥ d

Answer:

[tex]d\leq -7[/tex]

Step-by-step explanation:

Move all terms containing [tex]d[/tex] to the left side of the inequality.

Add [tex]-19d[/tex] to both sides of the inequality.

[tex]-38d-57+19d\geq 76[/tex]

Add [tex]-38[/tex] and [tex]19d.[/tex]

Move all terms not containing  [tex]d[/tex]  to the right side of the inequality.

Add [tex]57[/tex] to both sides of the inequality.

[tex]-19d\geq 76+57[/tex]

Add [tex]76[/tex] and [tex]57.[/tex]

[tex]-19d\geq 133[/tex]

Divide each term by [tex]-19[/tex] and simplify.

Divide each term in [tex]-19d\geq 133[/tex] by [tex]-19[/tex]. When multiplying or dividing both sides of an inequality by a negative value, flip the direction of the inequality sign.

[tex]\frac{-19d}{-19} \leq \frac{133}{-19}[/tex]

Cancel the common factor

[tex]\leq \frac{133}{-19}[/tex]

Divide [tex]133[/tex] by [tex]-19.[/tex]

[tex]d\leq -7[/tex]

The result can be shown in multiple forms.

Inequality Form:

[tex]d\leq -7[/tex]

Interval Notation:

[tex](- { \infty} ,-7][/tex]

I think its 24? or am i just not smart

Answer:

D. −2

Step-by-step explanation:

Use the formula  x = − b /2 a  to find the maximum and minimum.

( 2 , − 2 )

Answer to question:   5:12 5/12

Answer:

I believe the answer is neither

Step-by-step explanation:

Using implicit differentiation, it is found that she must blow air at a rate of 251.33 cm³/sec.

The volume of a sphere of radius r is given by:

[tex]V = \frac{4\pi r^3}{3}[/tex]

The radius is half the diameter, hence:

[tex]r = \frac{d}{2}[/tex]

[tex]r^3 = \frac{d^3}{8}[/tex]

[tex]V = \frac{4\pi d^3}{24} = \frac{\pi d^3}{6}[/tex]

Applying implicit differentiation, the rate of change of the volume is:

[tex]\frac{dV}{dt} = \frac{d^2 \pi}{2}\frac{dd}{dt}[/tex]

The rate that she must blow air is:

[tex]\frac{dV}{dt} = \frac{d^2 \pi}{2}\frac{dd}{dt}[/tex]

[tex]\frac{dV}{dt} = \frac{4^2 \pi}{2}(10)[/tex]

[tex]\frac{dV}{dt} = 251.33[/tex]

She must blow air at a rate of 251.33 cm³/sec.

A similar problem is given at https://brainly.com/question/25581404