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gizmo_the_mogwai [7]
2 years ago
8

Eliot needs to replace a window that is in the shape of a semicircle.

Mathematics
1 answer:
USPshnik [31]2 years ago
6 0

Answer:

7

\/

/

/

/

/

/

/

/

////

Step-by-step explanation:

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Cora said that (5b)^2 = 10b^2. <br> Describe her mistake and state the correct answer.
klio [65]

The easiest answer I know is if you swap the bs with xs, then there will be two equations called parabolas. They open upward if the value is positive and open downward if the value is negative. If the exponent is 2, then it's a parabola. If it's 3, then it's a cubic function, because cube is for "3". Square is for "2". If you look at both parabolas, you can see that 10x^2 is wider than (5x)^2.

So the best answer I can think of is She made a mistake because the parabola on the 10x² graph is wider than the (5x)² graph. Also, it's because 5x and 10x are not the same thing. When an x value increases, the graph is narrower.

7 0
2 years ago
A regular pentagon is inscribed in ur let of radius 8cm. find the length of one side of the polygon​
Sergio039 [100]

9514 1404 393

Answer:

  9.404 cm

Step-by-step explanation:

A regular polygon with n sides inscribed in a circle of radius r will have a side length given by ...

  s = 2r·sin(180°/n)

For r = 8 and n = 5, this gives a side length of ...

  s = 2·8·sin(180°/5) = 16·sin(36°) ≈ 9.404 . . . cm

4 0
3 years ago
When you square each side of an equation, is the resulting equation equivalent to the original?
Marina CMI [18]
It is not equivalent to the original
4 0
3 years ago
I have the equations 8x + 3y = 20.50 and 4x + 5y = 22.50<br> How do I solve for x and y?
snow_tiger [21]
8x + 3y = 20.50
-
4x+5y=22.50
=
4x-2y=-2, so you have to divide each number by 2, then
2x-y=-1, so

-y=-1-2x /-1, y=1+2x, then replace it with one original equation like the first one for instance:
8x+3(1+2x)=20.50, then
8x+3+6x=20.50, then
14x=20.50-3
14x=17.5
x=1.25, then solve y:\
y=1+2*(1.25)
y=1+2.5
y=3.5,
So answer is x=1.25, and y=3.5

6 0
3 years ago
Can I have some help
Kaylis [27]
4*7=28
5y=28
divide 5 to 28
y=5.6
7 0
3 years ago
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