3 years ago

I'll give a brainliest for the right answer.

Mathematics

1 answer:

alex41 [277]3 years ago

3 0

The answer is c. (-1,9).

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Fifteen more than twice the hours carla worked last week is the same as three times the hours she worked this week decreased by

Sloan [31]

<span>Let the number of hours she works be x
2x+15 15 more than twice the
3x-15 15 less than 3 times the hours she worked

2x+15=3x-15
3x-2x= 30
x= 30
the number of hours she worked is 30 </span>

5 0

3 years ago

I need help with number 8

zysi [14]

Answer:

C. The circle is circumscribed about ΔABC

Explanation:

The circumscribed circle of a polygon is a circle that passes through all the vertices of the polygon.

5 0

3 years ago

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What are the surface area and volume of a spherical barrel cactus with a radius of 5 inches?

tino4ka555 [31]

$\bf \textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r = 5 \end{cases}\implies SA=4\pi (5)^2 \\\\\\ SA=100\pi\implies SA\approx 314.16 \\\\[-0.35em] ~\dotfill\\\\ \textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3}\qquad \qquad V=\cfrac{4\pi (5)^3}{3}\implies V=\cfrac{500\pi }{3}\implies V\approx 523.60$