F(x)=-3.25x +22.41
f(-4.2)= 3.25(-4.2)+22.41 = 8.76
angela is running faster, even though josh has biggger numbers he took longer to run
The formula of the area of a circle is :
![A= \pi R^2](https://tex.z-dn.net/?f=A%3D%20%5Cpi%20R%5E2)
You know that the area is 1256.
So :
![1256= \pi R^2](https://tex.z-dn.net/?f=1256%3D%20%5Cpi%20R%5E2)
Divide both sides by
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
:
![\frac{1256}{\pi}=R^2](https://tex.z-dn.net/?f=%20%5Cfrac%7B1256%7D%7B%5Cpi%7D%3DR%5E2)
<span> take the square root of both sides in order to obtain r :
</span>
![\sqrt{ \frac{1256}{ \pi }}=R](https://tex.z-dn.net/?f=%5Csqrt%7B%20%5Cfrac%7B1256%7D%7B%20%5Cpi%20%7D%7D%3DR)
![20=R](https://tex.z-dn.net/?f=20%3DR)
<span>
In short, the answer would be 20 (i have rounded).
Hope this helps !
Photon
</span>
Answer:
0
Step-by-step explanation:
If we add 16 to both sides, we get 8x+32=8x Then if we subtract 8x we get 32=0 which leads to nothing.
It looks like you gotta to PEMDAS