Answer: The answer is (C) 180°.
Step-by-step explanation: Given that m∠A = 40°. ∠B is a complement of ∠A and ∠C is a supplement of ∠B. We are to find m∠B + m∠C.
Since ∠B is a complement of ∠A, so we have

Now, since ∠C is a supplement of ∠B, so we have

Therefore,

Thus, (C) is the correct answer.
B) D) and probably C) I’m not sure
The answer is-- 15,918,086,598,400. why do you need it?
Answer:
81
Step-by-step explanation:
put -36 over 1 and -4/9 in its reciprocal which is -9/4 and multiply.. -36(-9)=324
then multiply -1 by -4=4 now you have 324/4 which is simplified to 81..
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