Sketch, or describe in words, the following surfaces whose equations are given in cylindrical coordinates: 1. r = θ
2. z = r
3. z = θ

Can u guys do this ratio question. this is extremely urgent a tap is leaking water at a rage of 1l every 8 hours. how long will it take for the tap to leak a total of 300ml?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).