What is the value of y??

Mathematics

2 answers:

Zolol [24]4 years ago

5 0

Hey there!!

Remember :-

... The sum of all angles in a triangle is 180.

Hence,

... y + y + 30 + 40 = 180

... 2y + 70 = 180

... 2y = 110

... y = 110/2

... y = 55.

The value of y is 55.

Hope it helps!!

Korvikt [17]4 years ago

4 0

Answer:

y=55

Step-by-step explanation:

First take note a triangle is always equal to a total of 180 degrees

now setup the equation.

y+40+y+30=180

rid of alike terms

70+2y=180

Now subtract 70 from both sides

2y=110

Now divide both sides by 2

y=55

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