Which number is a rational number

49. 9/2 13/16 34

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

If 25% of y is 30, what is 60% of y?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 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)