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Alex
3 years ago
10

What is the value of y, and quick explanation please!

Mathematics
2 answers:
Georgia [21]3 years ago
7 0
The total degree value of a triangle is 180.

so 40+y+30+y=180
then solve for y =55
so the answer is b
aev [14]3 years ago
3 0
 think its B. because its a right angle and right angles are 90 degrees

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