A prism, whose area of cross-section is 55 cm, has a height of 21 cm. Find the volume of the prism.

The solution set for 5v2 – 125 = 0 is

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

What is the value of x when x + 7 = 21?