A bag contains 4 black checkers and 8 red checkers. A checker is selected, kept out of the bag, and then another checker is selected. What is p(black, then red)?

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)