Find the sample variance and standard deviation.
8, 48, 12, 51, 28, 34, 30, 32, 33,

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Evaluate 5 + 6 · 2 – 8 ÷ 4 + 7 using the correct order of operations. a. 22 b. 11 c. 27 d. 5