Because if you ask one student from each class you are getting a more accurate representation of the classes. If you were to ask one group you'd only get their opinion
Sorry, don't have time to do them right now but I know who does!
http://www.wolframalpha.com/widgets/view.jsp?id=ae438682ce61743f90d4693c497621b7
Just plug in 2 at a time.
Answer:
oui oui its x=2
Step-by-step explanation:
5x+10=20
5x=10
x=2
Answer:
ab=16
ca=4
4a=32
Step-by-step explanation:
a*b=8*2=16
c*a=1/2*8=4
4*a=4*8=32
hope it helped xx
