Answer:
7v^3+3v^2-9v
Step-by-step explanation:
This is the simplified version
Answer:
y=log_(6)x
Step-by-step explanation:
From the definition of logarithm:
<---> 
In our case, we have
which means that b=6, therefore the inverse function is
which can be rewritten by switching x and y:
Answer:
y = 40 / sqrt(pi)
Step-by-step explanation:
The area is 400
We want to find the diameter
400 = pi r^2
Divide each side by pi
400/ pi = r^2
Take the square root of each side
sqrt(400/ pi) = sqrt(r^2)
20/ sqrt(pi) = r
The diameter is twice the radius
2 r = d
2 * 20/ sqrt(pi) = d
40 / sqrt(pi) =d
y is the diameter so
y = 40 / sqrt(pi)
