Question

9. After being dropped a certain ball always bounces back to 2/5 of the height of its previous bounce. After the first bounce it reaches a height of 125 inches. How high (in inches) will it reach after its fourth bounce?

A. 20
B. 15
C. 8
D. 5
E. 3.2

Answer 1

@Jerry45 @sammixboo @zepdrix

Answer 2

ok What do you think about this one?

Answer 3

ummm i say b or c

Answer 4

im going for b more tho

Answer 5

Incorrect:If after each bounce it reaches 2/5 of the previous height, then after the second bounce it will reach 2/5 x 125. After the third it will reach 2/5 x 2/5 x 125. After the fourth it will reach 2/5 x 2/5 x 2/5 x 125. This cancels down to 2 x 2 x 2 = 8

Answer 6

therefor the correct answer is C

Answer 7

therefore*

Answer 8

aww man i was close thanks for the help! :)

Answer 9

No problem!

Answer 10

i fanned you :)

Answer 11

Thanks! :)