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41 votes
41 votes
What is the measure of the supplement?

User Lucacerone
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1 Answer

21 votes
21 votes

The measure of the supplement is x = 6º

To solve this, we'll call the angle A. We know that the angle A is 29 times greater than x and two times larger than" means "three times as large as". This means that with 29 supplements we'd make 1 angle A.

In an expression, this would be:


A=29x

We also know that A and x are supplementary angles, therefore:


x+A=180º

With these two expressions, we can solve the system:


\begin{gathered} \begin{cases}A=29x \\ x+A=180º\end{cases} \\ x+A=180º\Rightarrow A=180º-x \end{gathered}

Now we replace A in the first equation:


\begin{gathered} 180º-x=29x \\ 180º=29x+x \\ \\ 180º=30x \\ x=(180º)/(30) \\ x=6º \end{gathered}

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Now to find the measure of the angle A, we know that they're supplementary. Then:

A + x = 180º

Since x = 6º:

A + 6º = 180º

A = 180º - 6º

A = 174º

User Reana
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3.0k points