A ladder is placed 8 feet away from the base of a tree. If the ladder forms a 57° angle with the ground, how high up the tree will the ladder reaach

Me! last question, and i'm stuck! write the algebraic expression that models the word phrase. the product of 2 divided by the number h and 8 more than the number k

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%