With that question I got the answer to this.
Thanks LOL.
I was using 2x dx/dt + 2y dy/dt = 2z dz/dt
I accidentally put dx/dt as a non zero when it is 0. When I made it 0, I got the right answer XD.
The Mystery Machine travels 55 mph down the highway of life. An innkeeper is standing 500 ft from the highway. How fast is the distance between the innkeeper and the Mystery Machine increasing 1 min later?
The answer says it is 54.71 mph.
I got something a bit more than 60 for the mph...
Homework Statement
A decorative window has the form of a rectangle surmounted by a semicircle whose diameter is equal to the top of the rectangle. If the TOTAL perimeter of the window 16+pi, then what is the maximum area?
A. 25.653
B. 32.148
C. 15.923
D. 38.047
E. 30.018
Correct...