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Chapter 3: Q4. (page 120)

Check your solution.

2=6h+20

Short Answer

Expert verified

The solution for the equation 2=6h+20 ish=-3.

Step by step solution

01

– Separate the variables and constants

Write the original equation and separate the variables.

2=6h+202鈭�20=6h鈭�18=6h

02

– Solve for n

Divide both sides of the equation -18=6h by 6.

鈭�186=6h6h=鈭�3

Therefore, the solution of the equation is h=-3.

03

– Check the solution 

To check the solution, write the original equation and substitute the value of h.

2=6h+20

Now, substitute h=-3and check the result.

2=6鈭�3+202鈭�20=6鈭�3鈭�18=6鈭�3鈭�18=鈭�18

As the left-hand side is equal to right hand side, this signifies that the solution is correct.

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Explain how the graph of x>5 is different from the graph of x鈮�5.

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The perimeter of the rectangle shown is 28 units. The length is 10 units. What is the width of the rectangle?

  1. Write an equation for the perimeter of the rectangle in terms of x.
  2. Solve the equation to find the value of x.
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Check your answer.

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