Answer:
really <em> </em><em>o</em><em>h</em><em>.</em><em>.</em><em> </em><em>s</em><em>o</em><em>r</em><em>r</em><em>y</em><em> </em><em>d</em><em>u</em><em>d</em><em>e</em><em />
Angle of a straight line always sum up to 180 degrees
So what you should do is add the angles that are given to you and then subtract it from 180
Working:
100 + 20 + x = 180
120 + x = 180
x = 180 - 120
x = 60 degrees
I hope this helps you and your welcome
3 sorry if it is wrong but have a good day
Sorry for the messy handwriting. Hope this helps
A. No, because if you add 76.5 and 4.32, you'll get 80.82 instead of 72.18.
B. Yes, because if you add 72.18 and 4.32 you'll get 76.5
C. No, because if you substract 4.32 from 72.18, you'll get 67.86 instead of 76.5.
D. No, because if you add 76.5 and 72.18, you'll get 144.65 instead of 4.32.
Correct answer: B