Will give brainlesta square power-takeoff shaft with 2 1/4-inch sides needs to be covered with a round guard. the guard should have a least 2/5-inch clearance at all points. what should be the inside diameter of the guard?

Evaluate the dot product of (3,-1) and (1,5)

Which of the following is a proper fraction? a. 9⁄8 b. 5⁄6 c. 7⁄3 d. 4⁄2

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)