3 years ago

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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