trintrin227
trintrin227 trintrin227
  • 25-09-2018
  • Mathematics
contestada

What are the measurements of the two angles in the figure below?

A. 80* and 100*

B. 85* and 95*

C. 75* and 105*

D. 72* and 108*

What are the measurements of the two angles in the figure below A 80 and 100 B 85 and 95 C 75 and 105 D 72 and 108 class=

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musiclover10045
musiclover10045 musiclover10045
  • 25-09-2018

Both angles need to equal 180 degrees .

Add them together:

2x +10 + 3x-5 = 180

5X +5 = 180

Subtract 5 from each side:

5x = 175

Divide both sides by 5:

X = 175 / 5

X = 35


Now replace X with 35 in each equation:

2x +10 = 2(35) +10 = 70 +10 = 80

3x-5 = 3(35) - 5 = 105 -5 = 100


The answer is A. 80 and 100

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