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Can anyone help me with this thanks!

Can anyone help me with this thanks!-example-1
User DougJones
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1 Answer

5 votes

Answer:

54.6 inches

Explanation:

Let x be the height of Duc's brother.

If Duc is 39 inches tall, and he is 5/7 as tall as his brother, then we can express this relationship as:


(5)/(7)x=39

To find the height of Duc's brother, solve the equation for x.

Multiply both sides of the equation by 7:


7\cdot(5)/(7)x=7\cdot39


5x=273

Divide both sides of the equation by 5:


(5x)/(5)=(273)/(5)


x=54.6

Therefore, the height of Duc's brother is 54.6 inches.

User BHawk
by
8.2k points

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