Math Problem Statement

5∣x+6∣−2≥28

Solution

We are given the inequality:

5x+62285|x + 6| - 2 \geq 28

Step 1: Isolate the absolute value term

First, add 2 to both sides to eliminate the constant on the left:

5x+628+25|x + 6| \geq 28 + 2

This simplifies to:

5x+6305|x + 6| \geq 30

Step 2: Divide by 5

Now, divide both sides by 5:

x+6305|x + 6| \geq \frac{30}{5}

x+66|x + 6| \geq 6

Step 3: Solve the absolute value inequality

The inequality x+66|x + 6| \geq 6 means that the expression inside the absolute value, x+6x + 6, is either greater than or equal to 6 or less than or equal to -6. So, we solve two separate inequalities:

  1. x+66x + 6 \geq 6
  2. x+66x + 6 \leq -6

Case 1: x+66x + 6 \geq 6

Subtract 6 from both sides:

x0x \geq 0

Case 2: x+66x + 6 \leq -6

Subtract 6 from both sides:

x12x \leq -12

Step 4: Combine the solutions

The solution to the inequality is:

x0orx12x \geq 0 \quad \text{or} \quad x \leq -12

This can be written in interval notation as:

(,12][0,)(-\infty, -12] \cup [0, \infty)

Would you like further details or clarifications?

Here are some related questions:

  1. What are the steps for solving absolute value inequalities?
  2. How does the solution change if the inequality is strict (e.g., << or >>)?
  3. Can we solve this graphically? What would the graph look like?
  4. How do absolute value inequalities relate to distance on a number line?
  5. What are some real-world examples where absolute value inequalities are used?

Tip: When solving absolute value inequalities, always split them into two cases, one for the positive and one for the negative scenario.

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Inequalities

Formulas

Absolute value inequality |x + a| ≥ b
Inequality rules: Solve two cases for absolute value inequalities

Theorems

Absolute Value Property: |x| ≥ a means x ≥ a or x ≤ -a

Suitable Grade Level

Grades 9-11