217k views
4 votes
Find the value of x.

Find the value of x.-example-1
User Manwal
by
9.2k points

2 Answers

4 votes

Answer:

X = 60

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

I hope this helps!!

If you have any questions let me know!

- Kay :)

User Motox
by
8.1k points
6 votes

Answer:

x=15

Explanation:

User Andrey Agibalov
by
7.6k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories