At a certain time of the day, the sun is casting a shadow from a tree that is 22 feet long. If the sun is at an angle of 47 degrees, how tall is the tree?

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

Through non-collinear points there is exactly one plane.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4