You need to get an 85 on your last test
The answer is:
A) If a = b, then a + c = b + c.
and C) If w + 2 = 7, then w + 2-2 = 7- 2.
Answer:
The best first step would be to multiply the second equation by -2
Step-by-step explanation:
The best first step would be to multiply the second equation by -2
then you would have the following

and when you multiply it is easy to eliminate because you will get

and if you sum the equations you get
-7y = 8
so that is a single variable equation which is easier to solve.
50 cookies were on the platter originally.
5 = 10%
10 x 5 = 50
If cosΦ is lesser than zero (negative) it must be in quadrant 2 or 3 because cos is always positive in quadrants 1,4.