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Dmitry [639]
3 years ago
12

I’ll mark youyou brainlist I’ll mark youyou brainlist

Mathematics
2 answers:
White raven [17]3 years ago
4 0

Answer: 30 degrees

Step-by-step explanation:

Since the are supplementary have them equal to 180 (degrees).

(8r + 206) + (7t + 79)= 18

Combine like terms

15r + 295= 180

Subtract 295 from both sides.

15r + 295-295= 180-295

15r = -105

Divide both sides by 15

15r/15= -105/15

r=-7

Solve for the measure of YMB.

Plug in -7 for r.

7(-7) + 79

-49 + 79

30 = YMB

ale4655 [162]3 years ago
3 0
8r + 206 + 7r +79 = 360
15r + 285 = 360
15r = 75
r = 5

7(5) + 79
35 + 79

angle YMB is 114°
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Read 2 more answers
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