Math Problem Statement

Select the values that make the inequality 9d > 9 true. Then write an equivalent inequality, in terms of d.

Solution

The inequality provided is:

9d>99d > 9

To solve this inequality, we divide both sides by 9:

d>1d > 1

This means that the values of dd that make the inequality true are those greater than 1. From the given options in the image, the correct values are:

2,4,6,112, 4, 6, 11

The equivalent inequality is:

d>1d > 1

Would you like a more detailed explanation or further help?

Here are five questions to deepen your understanding:

  1. What is the process for solving inequalities involving multiplication or division?
  2. How would the inequality change if it were 9d99d \geq 9 instead?
  3. Can you explain why values less than or equal to 1 do not satisfy the inequality?
  4. How would the solution change if the inequality sign was reversed, making it 9d<99d < 9?
  5. How can you graph the solution d>1d > 1 on a number line?

Tip: Always remember that when dividing or multiplying both sides of an inequality by a negative number, the inequality sign must be flipped!

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Math Problem Analysis

Mathematical Concepts

Inequalities
Algebra

Formulas

To solve 9d > 9, divide both sides by 9

Theorems

Properties of Inequalities

Suitable Grade Level

Grades 6-8