Saturday

September 20, 2014

September 20, 2014

Posted by **Jeffrey** on Sunday, July 31, 2011 at 7:29am.

- calculus -
**eve**, Sunday, July 31, 2011 at 7:31amA car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the intersection and the truck is 15 from the intersection?

- calculus -
**Damon**, Sunday, July 31, 2011 at 11:12amV = (4/3) pi r^3

dV/dt = 4 pi r^2 dr/dt

200 = 4 pi (225) dr/dt

**Answer this Question**

**Related Questions**

Math - A spherical balloon is being inflated so that its volume is increasing at...

Word Problem-Calculus - A spherical balloon is being inflated in such a way that...

relaited rates - A spherical balloon is being inflated so that its volume is ...

MATHS help plizzz - A spherical balloon is being inflated and its radius is ...

calculus - air is being pumped into a spherical balloon at a rate of 8 cm^3/min...

Calculus - Air is being pumped into a spherical balloon and the volume is ...

Math - A spherical balloon is inflated with helium at the rate of 100pi ft ^3/...

calculus - A spherical balloon is being inflated at a rate of 10 cubic inches ...

Calculus - A spherical balloon is being inflated at a rate of 10 cubic inches ...

Calculus - a spherical balloon is inflated with gas at the rate of 500 cubic ...