sep 22 09

[austorior]

Harold rides his bike to school 3.4 miles away. He starts out at 25mph but slows down in a linear manner due to muscle fatigue. If it takes him 11min43sec to reach school, what is his speed as he arrives? (9.82mph)

Sally deposits 12 consecutive monthly payments of $200 each at 4% annual interest compounded continuously. How long after the last payment will she have $4000?
(12.3yr)

Charles throws a rock horizontally at 35mph from a bridge 50 ft above a river. How far horizontally from the base of the bridge does the rock hit the water? (90.5ft)

For what value of b is the integral of [unparseable or potentially dangerous latex formula] from 0 to [unparseable or potentially dangerous latex formula] equal to 7?
(-.714)


What is the maximum possible volume of a cone if the sum of the circumference and the slant height is 120in? (6480 [unparseable or potentially dangerous latex formula])

[AuSmith]

1) Solve for acceleration [unparseable or potentially dangerous latex formula] in ,

[unparseable or potentially dangerous latex formula][unparseable or potentially dangerous latex formula]

then find

[unparseable or potentially dangerous latex formula][unparseable or potentially dangerous latex formula]

2) This is some stupid formula from finance that I never liked.

3) Find how long it will take the rock to hit the water (it takes just as long to throw it horizontally as dropping it), then multiply that by [unparseable or potentially dangerous latex formula] miles an hour.

4) [unparseable or potentially dangerous latex formula] must be negative for the integral to converge (otherwise, the function doesn't even tend to [unparseable or potentially dangerous latex formula] as [unparseable or potentially dangerous latex formula]). We integrate and get [unparseable or potentially dangerous latex formula]

[stupidityismygam]

[stupidityismygam]