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03-10-2018
Mathematics

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Use the diagram below to answer questions 4-5.
what is the value of x?

Use the diagram below to answer questions 45 what is the value of x class=

Respuesta :

03-10-2018

In this diagram the two angles containing x add up to 180 because they are interior angle of 2 parallel lines. We can write this as

5x+15+3x-3=180

and then solve:

8x+12=180
8x=168
x=21°

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