A (n) ___

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

Which equation is true when the value of x is - 12? A. 1/2 x + 22=20 B. 15-1/2x=21 C. 11-2x=17 D. 3x-19=-17

Solve the system of linear equations below 2x-y=0 3x-2y=-3

Answer to a problem (6+7) - (8+2) is called

Expressions equivalent to 3/4x^3

At the dog show there are four times as many photos as spaniel's there are total of 30 dogs how many dogs are spaniels

A company is expanding its building area from 17,500 square feet to 22,400 square feet. What is the percentage increase of the area of the building space?

Absolute value of - 2

A rope climbing instructor has 3145 meters of rope to divide among 40 students. Each student will get an equal amount of rope. What length of rope does the instructor give to each student? Enter your answer, as a simplified mixed number, in the box.

Granda has 14 red roses and 7 pink roses. How many more red roses than pink roses does she have

An apple orchard sells apples in bag of 10. The orchard sold a total of 2,430 apples one day. How many bags of apples was this?