Differentiate. y = (1 − sec(x))/ tan(x)
y'=

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6