Chapter 3: Q28. (page 146)

Describe and correct the error in solving the inequality $9 x > - 45$ .

Short Answer

Expert verified

The solution of the inequality is $x > - 5$

Step by step solution

Step -1 - Apply the concept of Linear inequalities

In this type of inequality, Simply use the property of addition or subtraction or multiplication of suitable number on both Left Hand Side & Right Hand Sideto maintain the inequality and also the variable & numbers should be at the different sides in the equation.

Step -2 – Describing the given solution that have error

In this, below solution of the inequality

The error in the above solution is that the sign of the inequality has changed on solving the inequality due to which the answer comes wrong.

Step- 3 – Correction of the solution

Here, the inequality is $9 x > - 45$

Now, divide $9$ to both side of the equation

$\begin{array}{l} 9 x > - 45 \\ \frac{9 x}{9} > \frac{- 45}{9} \\ x > - 5 \end{array}$

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Describe and correct the error in solving the inequality $9 x > - 45$ .

Short Answer

Step by step solution

Step -1 - Apply the concept of Linear inequalities

Step -2 – Describing the given solution that have error

Step- 3 – Correction of the solution

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Describe and correct the error in solving the inequality 9x>-45.

Short Answer

Step by step solution

Step -1 - Apply the concept of Linear inequalities

Step -2 – Describing the given solution that have error

Step- 3 – Correction of the solution

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Decision Maths

Geometry

Calculus

Applied Mathematics

Theoretical and Mathematical Physics

Probability and Statistics

Study anywhere. Anytime. Across all devices.

Describe and correct the error in solving the inequality $9 x > - 45$ .