CPM CC3 Chapter 2 Review

Front

What is the formula for the perimeter of a rectangle?

Back

The perimeter (P) of a rectangle is given by the formula P = 2(length + width).

Front

How do you solve for x in the equation 2x + 3 = 13?

Back

To solve for x, subtract 3 from both sides to get 2x = 10, then divide by 2 to find x = 5.

Front

What does it mean to simplify an expression?

Back

Simplifying an expression means to reduce it to its simplest form by combining like terms and eliminating unnecessary operations.

Front

What are zero pairs in algebra?

Back

Zero pairs are pairs of numbers that add up to zero, such as (+x) and (-x). They can be removed from equations without changing the value.

Front

What is the value of x in the equation x + 4 = 10?

Back

To find x, subtract 4 from both sides: x = 10 - 4, so x = 6.

Front

What is the simplified form of the expression 3x + 5 - 2x - 1?

Back

The simplified form is x + 4.

Front

How do you determine the perimeter of a figure with sides of length x, 2, x, and 2?

Back

Add the lengths of all sides: P = x + 2 + x + 2 = 2x + 4.

Front

What is the first step in solving the equation 4x - 7 = 9?

Back

Add 7 to both sides to isolate the term with x: 4x = 16.

Front

What does it mean to 'remove zero pairs' from both sides of an equation?

Back

It means to eliminate equal positive and negative values from both sides, simplifying the equation without changing its balance.

Front

What is the solution to the equation 3x = 15?

Back

Divide both sides by 3 to find x = 5.