Answer:
A. 30
Explanation:
Alright man so a triangle has 180 right? So basically let's try to find angle x by finding out the other 2 first -
So we don't know the angle next to the 100 degree one, but notice how a straight line is basically 180 degrees? Those 2 lines that intercept form 2 angles one of them given as 100. When they add up we get 180 (a straight line)
To find that angle we subtract 100 from 180:
180 - 100 = 80. So now we have 80 and 70.
Let's add 80 and 70 because why not? (add them to find sum of 2 angles combined)
80 + 70 = 150
Now let's subtract 150 from 180 to solve for angle x
180 - 150 = 30
Alright so we done basically hope you have cool dream or something.