A (n)

is a letter used as a placeholder for an unknown value.

Complete the steps to factor 2x2 + x + 5x + 15 by grouping. Step 3: What is the greatest common factor of Group 2?

4. Evaluate x ( - y + z) for x = - 1, y = 2, and z = 5.

What is the theoretical probability of being dealt exactly one ace in a 5-card hand from a standard 52-card deck?

A city received 17 inches of rain last year which was only 37% of what the usually get, how many inches doe it normally get?

What is the equation of 3 (5x+2) = 8x+20

Gasoline can power a car because the fuel has electrical potential energy chemical potential energy nuclear potential energy static potential energy

Caroline baked bread each day for 5 days for a bake sale. She baked 3 types of bread each day and used 2 cups of flour for each recipe. How many cups of flour did Caroline use?

Find the mean and standard deviation of each data set. Round to the nearst hundredth. 1. 4 8 5 12 3 9 5 2

Julia needs to cut 4 pieces of yarn, each with the same length and a piece of yarn 7.75 inches long let x represent the length of each of the equal pieces of yarn that Julia decides to cut.

Write the recurring decimal 0.4 as a fraction in its simplest form.