16-01-2017
Mathematics

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

What is the value of y and quick explanation please class=

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rosalina854 rosalina854

16-01-2017

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

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alexismmn alexismmn

16-01-2017

think its B. because its a right angle and right angles are 90 degrees

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