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Amiraneli [1.4K]
3 years ago
14

Help me please thank you

Mathematics
1 answer:
aalyn [17]3 years ago
3 0

Answer:

Angle B is 54º.  

Step-by-step explanation:

First, find <em>x</em>.  Since angle A and angle B are supplementary angles, they add up to 180º.  

(7<em>x</em> + 7)º + (4<em>x</em> - 14)º = 180º.  

11<em>x</em> - 7 = 180

11x = 187

<em>x</em> = 17.  

Now, substitute 17 for <em>x</em> in angle B's equation, (4<em>x</em> - 14).  

4(17) - 14

= 68 - 14

= 54º

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