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Can someone please help me? What is the value of y? and how do you solve this. Thanks :)
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3 votes
Can someone please help me? What is the value of y? and how do you solve this. Thanks :)

Can someone please help me? What is the value of y? and how do you solve this. Thanks-example-1
User Patrick Burtchaell
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5.3k points

2 Answers

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The sum of the triangle is 180
180 = 40 + (y+30) + y
-40 -40
140 = (y+30) + y
140 = 2y + 30
-30 -30
110 = 2y
/2 /2
55 = y (40+55+85=180)
User Sjaustirni
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5.7k points
4 votes
You solve it by adding up all 3 angles, and then writing

(the sum) = 180 degrees.

This equation is true in EVERY triangle.

Write it, and then solve it to find y .
User Yousuf Jawwad
by
5.5k points
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