X/2 is the same thing as 1/2x
The angles in a triangle add up to 180 degrees. That's the same sum as a linear pair, which we get when two lines cross.
1. 180 - 65 - 45 = 70
Answer: 70°
2. 180 - 90 - 35 = 55
Answer: 55°
3. 180 - 120 = 180 - 50 - x
x = 70
Answer: 70°
1800
20%=1/5 which means 360x5 is the number of people at the concert
360x5=1800
hope this helps :)
Mars year is 1.88 of your Earth years.
So if you are 13,
1.88 x 13=24.44, or 24 years old, I think.
