A 13-ft ladder is propped against a vertical wall. The top end of the ladder is 12-ft above the ground as it leans against the wall. What is the measure of the angle formed by the ladder with the ground? Round all answers to the nearest degree. A.38 B.67 C.43 D. 23​

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

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)