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Anastasy [175]
2 years ago
7

Find the value of x.

Mathematics
2 answers:
Elenna [48]2 years ago
3 0

Answer:

x=15

Step-by-step explanation:

oksano4ka [1.4K]2 years ago
3 0

Answer:

X = 60

Step-by-step explanation:

All angles in a triangle have to add up to 180 degrees. Therefore we can set up an equation like this:

40 + (x + 20) + x = 180

Now, all we have to do is solve:

Combine:\\60 + 2x = 180\\Minus:\\2x = 120\\Divide:\\x = 60

Therefore, x is equal to 60.

We can check this by plugging x into the angles and adding all of them up :

40 + (60 + 20) + 60 = 180

40 + 80 + 60 = 180

120 + 60 = 180

180 = 180

<em>I hope this helps!!</em>

<em>If you have any questions let me know!</em>

<em>- Kay :)</em>

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