13. A circle has a diameter of 12 in. What is the area of a sector determined by a 60°arc? Leave your answer in terms of pi.​

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?