Julie got a silver medal for winning a contest. She measured the medal and calculated that it has a circumference of 18.84 centimeters. What is the medal's diameter?

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

How can (square root of 25) ^2 be rewritten?