7th Grade Final Exam Study Guide

Front

What is the formula for the perimeter of a square?

Back

The perimeter of a square is given by the formula P = 4s, where s is the length of a side.

Front

If the side of a square is represented as (9x - 5.5), what is the simplified expression for its perimeter?

Back

The simplified expression for the perimeter is 36x - 22.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula A = 1/2 * base * height.

Front

If a triangle has an area of 20 in² and a height of 5 inches, how do you find the base?

Back

Use the formula A = 1/2 * base * height. Rearranging gives base = (2 * A) / height.

Front

What does it mean for a graph to demonstrate a proportional relationship?

Back

A proportional relationship means that two quantities maintain a constant ratio.

Front

If Kaleigh spent $10.00 total on popcorn and refills, how do you calculate the number of refills?

Back

Subtract the cost of the large popcorn from the total spent, then divide by the cost of each refill.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions, showing that one is less than, greater than, or not equal to the other.

Front

How do you write an inequality for a situation involving weight limits?

Back

Identify the total weight and express it as an inequality, e.g., total weight ≤ weight limit.

Front

What is the significance of the constant in a linear equation?

Back

The constant represents the y-intercept, which is the value of y when x is zero.

Front

What is the difference between a linear equation and an inequality?

Back

A linear equation shows equality, while an inequality shows a range of possible values.