A machine produces 4500 parts in an 8 hour day. In minutes, how long will it take to produce 100 parts?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

How can you construct perpendicular lines and prove theorems about perpendicular lines

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)