The formula a=3r^2 gives the approximate area, a of a circle with radius, r. find the radius of a circle with an approximate area of 48 square units.

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

What is the reflection image of (5,-3) across the line y = -x?