5-9TAP Unit 5 Test Review

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, greater than or equal to, or less than or equal to the other.

Front

What does the symbol '>' mean in an inequality?

Back

The symbol '>' means 'greater than'. For example, in the inequality 5 > 3, 5 is greater than 3.

Front

What does the symbol '<' mean in an inequality?

Back

The symbol '<' means 'less than'. For example, in the inequality 2 < 4, 2 is less than 4.

Front

What does the symbol '≥' mean in an inequality?

Back

The symbol '≥' means 'greater than or equal to'. For example, in the inequality x ≥ 5, x can be 5 or any number greater than 5.

Front

What does the symbol '≤' mean in an inequality?

Back

The symbol '≤' means 'less than or equal to'. For example, in the inequality y ≤ 10, y can be 10 or any number less than 10.

Front

How do you solve the inequality 26 > n + 15?

Back

To solve for n, subtract 15 from both sides: 26 - 15 > n, which simplifies to 11 > n or n < 11.

Front

What is the solution to the equation -90 = -100 + x?

Back

To find x, add 100 to both sides: -90 + 100 = x, which simplifies to x = 10.

Front

What is the solution to the equation 6 > x?

Back

The solution indicates that x can be any number less than 6.

Front

How do you check if x = 4 satisfies the inequality 25x ≤ 100?

Back

Substitute x with 4: 25(4) = 100. Since 100 ≤ 100 is true, x = 4 satisfies the inequality.

Front

What is the first step in solving the inequality -25x > 100?

Back

Divide both sides by -25. Remember to reverse the inequality sign: x < -4.