What is the volume of the prism, in cubic centimeters?

The amount of energy it takes to lift a box might be a function of which of the following

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

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?