Answer:
The radius of the circle is ![r=98\ units](https://tex.z-dn.net/?f=r%3D98%5C%20units)
Step-by-step explanation:
we know that
The circumference of a circle is equal to
![C=2\pi r](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r)
we have
![C=615.44\ units](https://tex.z-dn.net/?f=C%3D615.44%5C%20units)
assume
![\pi=3.14](https://tex.z-dn.net/?f=%5Cpi%3D3.14)
substitute and solve for r
![615.44=2(3.14)r](https://tex.z-dn.net/?f=615.44%3D2%283.14%29r)
![r=615.44/6.28](https://tex.z-dn.net/?f=r%3D615.44%2F6.28)
![r=98\ units](https://tex.z-dn.net/?f=r%3D98%5C%20units)
Answer:
Step-by-step explanation:
-(2x+1)
-2x-1
write -2 in that bos and 1 after "-"
3/4 (x+8)=9
3/4x+6=9
-6
3/4x=3
X=4
Check
3/4(4+8)=9
3/4 (12)=9
9=9
Answer:
Im pretty sure its figure 2
Step-by-step explanation:
They are quite the same
The inverse of this function is y = ![\frac{ln(x + 9)}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bln%28x%20%2B%209%29%7D%7B2%7D%20%20)
You can find the inverse of any function by switching the x and y values. Once you've done that, you can solve for the new y. The result will be the inverse of the function. The work for this one is below.
y =
----> Switch the x and y
x =
-----> Add 9 to both sides
x + 9 =
----> Take the natural log (ln) of both sides. This will case the e to cancel on the right side.
ln(x + 9) = 2y ----> Divide both sides by 2.
y = ![\frac{ln(x + 9)}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bln%28x%20%2B%209%29%7D%7B2%7D%20%20)
This will be your inverse function.