Wednesday

March 4, 2015

March 4, 2015

Posted by **PDF** on Saturday, January 28, 2012 at 10:54pm.

- Algebra -
**Reiny**, Sunday, January 29, 2012 at 9:07amMake a diagram

distance during first bounce - 15 ft

distance during 2nd bounce - 2(15)(3/5)

distance during 3rd bounce = 2(15)(3/5)^2

distance during 4th bounce = 2(15)(3/5)^3

etc

from the 2nd term on, we have a geometric series

where a = 2(15)(3/5) = 18 and r = 3/5

and the want Sum∞

sum∞ = 15 + a/(1-r)

= 15 + 18/(1-3/5)

= 15 + 18/(2/5)

= 15 + 45 = 60

- Algebra -
**Abel**, Friday, September 21, 2012 at 8:50ama sub 1 = 30

r = 3/5

S = (r) / (1-r)

S = {(30ft) / [(1)-(3/5)]}(3/5)

S = 150ft / 5-3 = 150ft / 2 = 70ft

- Algebra -
**Michelle**, Monday, November 24, 2014 at 7:52pm60

**Answer this Question**

**Related Questions**

math - a ball rebounds one half of the height from which it was dropped. The ...

uniben - A rubber ball is dropped from a height of 10meters,suppose it rebounds ...

MATH - a golf ball dropped onto a hard surface rebounds exactly 1/3 of the ...

physics - a 400 g rubber ball is dropped a vertical distance of 12 m onto the ...

math - A ball is dropped from a height of 5 ft. Assuming that on each bounce ...

Math 12 - A hard rubber ball is dropped from a moving van with a height of 5 ...

physics - a rubber ball of mass 50g falls from a height of 10 cm and rebounds to...

calculus II - a ball is dropped from a height of 100 ft. Each time it hits the ...

Math - A ball is thrown 16 m into the air. The ball falls, rebounds to half its ...

Math - I need some help with these quesitons 1. a1 = -1, and an = 4/3an-1 for n...