Can i need and i can take thetest onlt one time ! p!
a box contains 10 green balls, 15 red balls, 8 white balls, and 7 black balls. what is the probability of drawing a white ball out of the box?

a.1/8 < i think it is this

b.1/5

c.1/4

d.1/2

Well add them all up. : 10+15+8+7=40. There are 8 white balls out of 40. 8/40. Find the GCF of them both and simplify them.

8=8 so 8/8 = 1
40=8 so 40/8 = 5 so 1/5 is your answer.

B. is your answer.

Hoped I helped!

In order to do this we must add first. We have to add the balls in order  to get the answer.

10+15+8+7=40

What number is going to go into 40? The white balls right? So

8/40 is your answer which just needs to be simplified :

Find the GCF of them both and divide.

8/8 = 1
       
40/8 = 5

Your answer is 1/5.

Hoped I helped!

Hello!
volume of sphere =4/3.pi.r^3