Math Problem Statement

Which inequality is true when the value of m is 9?

Solution

Let's solve the problem by testing each inequality with m=9m = 9.

The inequalities are:

  1. m+5<7m + 5 < 7
  2. m+5>7-m + 5 > 7
  3. m+5<7-m + 5 < -7
  4. m+5<7-m + 5 < 7

Now, substitute m=9m = 9 into each inequality:

  1. 9+5<79 + 5 < 7 14<7(False)14 < 7 \quad \text{(False)}

  2. 9+5>7-9 + 5 > 7 4>7(False)-4 > 7 \quad \text{(False)}

  3. 9+5<7-9 + 5 < -7 4<7(False)-4 < -7 \quad \text{(False)}

  4. 9+5<7-9 + 5 < 7 4<7(True)-4 < 7 \quad \text{(True)}

So, the correct inequality is the last one: m+5<7-m + 5 < 7.

Would you like more details or have any other questions?

Here are five related questions for further practice:

  1. What is the solution to m4>10m - 4 > 10?
  2. How do you solve inequalities involving absolute values?
  3. How can you graph the solution of x+25x + 2 \leq 5?
  4. What happens to the inequality sign when both sides are multiplied by a negative number?
  5. How can inequalities be used to solve real-world problems?

Tip: Always check your inequality solution by substituting values into the original equation to ensure it holds true.

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Math Problem Analysis

Mathematical Concepts

Algebra
Inequalities

Formulas

Inequality formula handling substitution

Theorems

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Suitable Grade Level

Grades 6-8