12 = 60 degrees.
The "C" pattern means that whatever is on the top/bottom corner will be equal to the opposite one.
7r=-7/2
divide both sides by 7 to get r by itself
(7r)/(7) = (-7/2)/(7)
if you don't quite see it, think of multiplying both sides by 1/7 instead (its the same thing as dividing by 7)
(7r)*(1/7)=(-7/2)*(1/7)
r=-1/2
I would use the decimal form of 5.4%. It is very easy to convert a percentage into a decimal. All you have to do is move the decimal point two places to the left and remove the % sign.
5.4% = 0.054
So, 0.054 would be your multiplier.
It's going down by five but I'm sure on the last one..but to help add a zero like if it 0.5 it would be 0.50 that should help.
