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Sloan [31]
3 years ago
15

Can someone please help me on this question

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

∠2=121°

Step-by-step explanation:

Ok, firts know that supplementary angles add up to 180 degrees, it means that ∠1+∠2=180°, and we are told that ∠1=4y+7 and ∠2=9y+4. <u>We need ∠2</u>.

∠1+∠2=180°

(4y+7)+(9y+4)=180 Solve the equation, finding y.

13y+11 = 180

y = (180-11)/13

y = 169/13

y = 13

Now we know y, ∠2=9(13)+4=121°

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