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Chapter 3: Q30. (page 146)

Write the verbal sentence as an inequality. Also, solve the equation

鈥淔ive times a number is at least 45.鈥�

Short Answer

Expert verified

The equation is 5x鈮�45 and the solution of inequality is x鈮�9.

Step by step solution

01

Step -1 - Apply the concept of linear equations

In this, simply use the concept of understanding the problem and their words very carefully and also take a suitable variable to make equation and also do various mathematical operation to get the solution.

02

Step -2 – Find the inequality by explaining the statement

Here, The statement Five times a number is at least 45.

From the above, Let the number be x.

Then, according to statement of question, the inequality is 5x鈮�45.

03

Step -3 – Finding the solution of equation for x

Now, The inequality is 5x鈮�45.

Simply dividing by 5, to both side of the equation,

5x鈮�455x5鈮�455x鈮�9

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