X=40 degrees
100+2x=180
80=2x
x=40
You could estimate by doing 600x3=1800
(becasuse of the 0's in 600 it is easier to do 6*3=18 and then add two 0's to the end 1800)
then you simply multiple 640x3=1920
Answer:
Step-by-step explanation:
Answer:
9/4 * 3/4 = 27/16 = 1
Step-by-step explanation: