Saturday

October 25, 2014

October 25, 2014

Posted by **Fred** on Monday, October 25, 2010 at 11:21am.

- Calculus -
**Reiny**, Monday, October 25, 2010 at 11:40amlet the truck' distance from the intersection be x miles

make a diagram and you should have a right-angles triangle with sides x,1, and let the hypotenuse be y

given dx/dt = 60 mph

find dy/dt when x = 3

y^2 = x^2 + 1

2y dy/dt = 2x dx/dt

dy/dt = (x dx/dt)/y

when x = 3, y = √10

dy/dt = 3(60)/√10 = appr. 56.92 mph

**Answer this Question**

**Related Questions**

calculus - a road that runs perpendicular to a highway leads to a farmhouse ...

calculus - You work for the silver there is a home with a driveway 2 miles long ...

math - A road perpendicular to a highway leads to a farmhouse located 8 mile ...

math - Mark's house is 90 miles away from New York. You travel 15 miles on city ...

college algebra - Please help. Merina is moving out of her mom's house to her ...

Calculus/ Optimization - A truck driver, on assignment from the owner of the ...

Math/ Calculus Please HELP!!! - A truck driver, on assignment from the owner of ...

Math - If Anna leaves her house at 11:00am and walks to her friends house ...

math - A traveler travels on a highway 80 miles at 55 miles per hour, he then ...

math - A car travels along a straight road, heading east for one hour then ...