Answer:
D
Step-by-step explanation:
DEF is merely a straight line. It has to be 180 by definition.
Answer: the answer is c- 16
Sounds like rearranging to me:
P=2(a+b) -- expand brackets
P=2a+2b -- subtract 2a
P-2a=2b -- divide by 2
b=(P-2a)/2
well...
15 x 20 = 300
300+85 = 385
you can get 20 watches for $385
Just multiply.
11.76 * 23.5= 276.36
So Mike earned $276.36 last week
