First add 8/7 on each side
2x=-4 6/7
Now divide by 2
x = -2 3/7
Answer:
Step-by-step explanation:
Area of a circle is equal to
, where r is the radius
![A=\pi r^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E2)
A diameter is twice the length of the radius. (
)
So the radius is 4 cm.
![r^2=4^2=16](https://tex.z-dn.net/?f=r%5E2%3D4%5E2%3D16)
so the Area is ![16\pi](https://tex.z-dn.net/?f=16%5Cpi)
(not sure )
my method
let projection of b onto line dq be M
BM is 2r
then let the remaining angle ( right) be K
in triangle BMK ,
MK = 29-5-r
By Pyth. theorem ,
23^2 = (2r)^2+(29-5-r)^2
529=4r^2+576-48r+r^2
5r^2-48r+47=0
r = 8.493237063 or 1.106762937(rejected)
Answer:
it's C. 2.26s
but you wrote 2.16s nearly