7th grade Module 7

Front

What is the value of x in the equation x = 10?

Back

x equals 10.

Front

If Anna is 36 years old and is 9 years older than 3/4 of Carlos's age, what equation represents Carlos's age (C)?

Back

3/4C + 9 = 36.

Front

Fabiola runs 4 miles each day he trains and 3 miles more on Saturday. If his total distance for the week is 31 miles, what equation can be used to find the number of days he trains (x)?

Back

4x + 3 = 31.

Front

What expression is equivalent to -15x + 45?

Back

-15(x - 3).

Front

Are the equations 5(3x + 4) and 8x + 20 equal?

Back

False.

Front

What is the formula for finding the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width).

Front

What is the definition of a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What does it mean for two expressions to be equivalent?

Back

They have the same value for all values of the variables.

Front

What is the distributive property in mathematics?

Back

a(b + c) = ab + ac.