i did
given: dz/dt= 10m/min, 15m
need dx/dt
x^2 + y^2 = z^2
2x dx/dt + 2y dy/dt = 2z dz/dt
x dx/dt + y dy/dt = z dz/dt
what should i do for the next step?
A boat is being pulled into a dock by a means of a rope attached to a pulley on the dock which is 5 meters above the level of the boat. The rope is being pulled in at a rate of 10 meters per minutes. How fast is the distance between the boat and the dock changing when there is 15 meters of rope out?
how do i do this problem?