Geometry question

No explanation necessary, I need an answer in two words or less
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Answers

Answer 1
Answer:

Answer: circle

Step-by-step explanation:

All cross sections of a sphere are circles.


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Jessica wants to go on a school trip next month. The trip will cost $100 and she already has $10 and plans to babysit for $5 an hour to earn the rest of the money.A. Write an equation that could be used to determine h, the number of hours Jessica needs to babysit to earn $100.


B. From your equation, determine the number of hours she needs to babysit.

Answers

Answer:

Step-by-step explanation:

100=10+5x  x is the hours she needs to babysit

90=5x

x=18

She needs to babysit for 18 hours at $5 an hour if she already has $10

A semicircular flower bed has a diameter of 3 metres. What is the area of the flower bed?

Answers

The area of circle is

A_{\text{circle}}=\pi r^2.

Then the area of semicircular region is

A_{\text{semicircular region}}=(1)/(2) \pi r^2.

If r=3 m, you have

A_{\text{semicircular region}}=(1)/(2) \pi \cdot 3^2=(9\pi)/(2)=4.5\pi \approx 14.13 sq. m.

Answer: A_{\text{semicircular region}}=4.5\pi \approx 14.13 sq. m.

you would divide 3 by 2 than you would square 1.5 and multiply it by 3.14 7.065

Label each function as even, odd, or neither.

Answers

an even function has symmetry about the x axis

this means that if you fold the graph over the y axis, the function will map over itself

in number terms, if f(x) is an even function, then f(x)=f(-x)

an example is f(x)=x²


an odd function has symmetry about the origin

it is kinda confusing, but if g(x) is an odd function, g(-x)=-g(x)

an example is g(x)=x³



the first one (f(x)) seems to be neither

h(x) one, notice for x=2 and -2, the values are negative of each other, this tells us that it's an odd function

g(x), replacing x with -x gives us -|-2x|+3=-|2x|+3, same function, even function


If f(x)= -x^2 - 1, and
g(x)=x + 5, then

g(f(x))=___x^2+___x+___

Answers

Answer:

Step-by-step explanation:

g(f(x))

g(-x^2 - 1)

-x^2 + 0x + 4= -x^2 + 4

What two factors of -21 add up to -20

Answers

1 and -21. Think about it! 1x-21 = -21
-21+1 = -20

Explain how to use a coordinate plane to find the area of a rectangle with vertices (–4, 9), (–4, –3), (–1, –3), and (–1, 9). what is the area?

Answers

We want to use a coordinate plane to find the area of the given rectangle.

We will see that the area is 36 units squared.

So we only know the vertices of the rectangle, which are:

  • (-4, 9)
  • (-4, -3)
  • (-1, -3)
  • (-1, 9).

The first thing we can do, is graph these in a coordinate axis so we can see our rectangle.

Below you can see the graph of the rectangle where the four vertices are graphed and I drew the sides of the rectangle.

Now that it is graphed is easy to see the measures of each side, one side measures 3 units (from -1 to -4 on the x-value) and the other side measures 12 units (from -3 to 9 on the y-value)

Then the area of the rectangle is:

A = 3*12 = 36 square units.

If you want to learn more about rectangles and areas, you can read:

brainly.com/question/17297081

the formula for area of a rectangle is

Area = length x width

since both the length and the width of the rectangle lie on the same x and y axis, we can find the distance between the width and the distance between the length by subtracting

(-4,9) (-4,-3)

these points lie on the same x axis, so they create a vertical line

9-(-3) = 12

12 units is the distance between them

(-4,-3) (-1,-3)

these points lie on the same y axis, so they create a horizontal line

-1-(-4) = 3

3 units is the distance between them

now that we have the length and the width, we can find the area

A = 12 x 3

A = 36 units²

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