Find the Length, width and Height. Find the surface area as well

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55