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zepelin [54]
2 years ago
8

Does anyone know what the formula for the area of a circle is?

Mathematics
2 answers:
Sloan [31]2 years ago
8 0

Answer:

search up-area of circle formula and circumference of a circle formula

Step-by-step explanation:

eduard2 years ago
4 0

Answer:

area formula: πr²

circumference formula 2πr

Step-by-step explanation:

area is pi times the radius of the circle squared

circumference is two times pi times the radius of the circle

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If f(x)=x/2+8, what is f(x) when x=10
MAVERICK [17]
F(X)=13 Just Plug 10 into the X in the equation

7 0
3 years ago
Read 2 more answers
A rectangular prism has a base with a length of 25, a width of 9, and a height of 12. A second prism has a square base with a si
RSB [31]

Answer:

The height of the second prism is 12 units.

Step-by-step explanation:

First, we must know that the volume of a rectangular prism is equal to length x width x height. With this information, we can multiply the given dimensions of the first rectangular prism to get a volume of 2700 cubic units. From here, we must understand wha we need from the second rectangular prism. Because it has a square base of 15, that accounts for both its width and length. Therefore, we have that

Volume= 15^2 x\\2700/225=x\\12=x

6 0
2 years ago
Daniel dives into a swimming pool. The height of his head is represented by the function h(t) = -8t2 - 28t + 60, where t is the
8_murik_8 [283]
So, h(t) is how far is Daniel's head from the surface of the water, namely the surface itself is when the height is nill, so his head is at the surface and the height of it is just 0, thus h(t)  = 0.  Namely, what is "t" when h(t) is 0?

\bf h(t)=-8t^2-28t+60\implies \stackrel{h(t)}{0}=-8t^2-28t+60
\\\\\\
0=-2t^2-7t+15\implies 2t^2+7t-15=0\implies (2t+3)(t-5)=0
\\\\\\
\begin{cases}
2t+3=0\implies 2t=-3\implies &t=-\frac{3}{2}\\\\
t-5=0\implies &\boxed{t=5}
\end{cases}

clearly the seconds cannot be a negative unit, so is not -3/2.
6 0
2 years ago
A cell phone company charges $20 for a customer to open a new account and $35for each month of phone service.
JulsSmile [24]
Y=20+35x because the 20 is a 1 time thing and 35x because 35 is charged each month
5 0
2 years ago
Two different 2 digit numbers round to 70 to the nearest 10.The sum of the two numbers is 136.What could the two numbers be?
belka [17]

Answer:

Step-by-step explanation:

If they can be rounded to 70 to the nearest 10s. Then they are from 65 to 74.

Their sum is 136.

If we use 136 divided by 2 we get 68.

Since they're distinct, so one can be 67 and one can be 69

3 0
2 years ago
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