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Ivan
3 years ago
7

I need help with this math

Mathematics
2 answers:
Zinaida [17]3 years ago
8 0

Answer:

D

Step-by-step explanation:

∠1 + ∠2  =  180   {Supplementary angles}

6x + 15 + 3x + 3 = 180

6x + 3x + 15 + 3 = 180      

Combine like terms

9x + 18 = 180

Subtract 18 from both sides

9x = 180 - 18

9x = 162

x = 162/9

x = 18

∠2 = 3x +3

     = 3*18 + 3

     = 54 + 3

∠2 = 57°

Goryan [66]3 years ago
8 0

Answer:

Answer is option D) 57°

Here is the explanation...

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