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dimaraw [331]
3 years ago
5

\A and \B are supplementary angles. If m\A= (3x – 23) and m

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
5 0

2 supplementary angles when added together need to equal 180 degrees.

Add:

3x-23 + 2x-12 = 180

Simplify:

5x -35 = 180

Add 35 to both sides:

5x = 215

Divide both sides by 5:

X = 43

Now replace x with 43 in the equation for angle b:

2(43) -12 = 86-12 = 74 degrees

Angle B = 74 degrees

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