the sliding board is 15 feet long and meets the ground at a 40 degree angle. what is the height of the ladder?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

What is the inverse of the function f(x) = 2x + 1?

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90