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marusya05 [52]
3 years ago
15

Can someone please help me with the first question?

Mathematics
2 answers:
Paraphin [41]3 years ago
6 0
Answer is A. 18
Because n + 18 =2n
krek1111 [17]3 years ago
3 0
#2 is 60°

All three angles in a triangle will always add up to 180°. You know one of them is 49°. To find the angle U, you can see that it falls on a flat line, which is going to equal 180°, so to find that angle you would subtract 109 from 180, giving you 71°. If two of the angles are stated, all you need is to subtract both from 180 to find what your last angle is.
So 180°-71°-49° = 60°


#4 I think is 75, but I don't feel like explaining it.

Hope this helps :))
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