Answer:
The radius of the sphere is 
Step-by-step explanation:
we know that
The volume of a sphere is equal to

In this problem we have

substitute and solve for r

simplify



The answer is that he has a 40% chance
10*100=1000
1000/25=40
Making it a 40% chance
9x - 4(x - 2) =x + 20
We move all terms to the left:
- 9x -4(x - 2) - (x + 20) = 0
Multiply
- 9x - 4x -(x + 20) + 8 = 0
We get rid of the parentheses.
We add all the numbers and all the variables.
We move all terms containing x to the left hand side, all other terms to the right hand side
5.65 in a mixed number is 5 13/20
The LCD of 3/5 and 1/6 is 30