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:
45 sq.units
Step-by-step explanation:
to get area of a triangle, it would be base*height/2, so 15*6/2 would be 90/2, which ends up being 45, which is the answer.
Answer:
Joni's mistake was to multiply the exponents instead of adding the exponents.
Step-by-step explanation:
we know that
When multiplying two powers that have the same base, you can add the exponents
so

Joni's mistake was to multiply the exponents instead of adding the exponents.