Answer:
The length of the base is 
Step-by-step explanation:
Since we know the formula to find the area of a triangle is
, we can plug in and solve for b. When we plug into the formula we get:
= 
First multiply by 2 on both sides to get rid of the 1/2 on the left. After doing this we get:

Then we can multiply by 5 on both sides to get rid of the 1/5 on the left. After doing this we get out answer:

Answer:
I think it's 63m squared
Step-by-step explanation:
Answer:
In terms of %, it's 20%.
Step-by-step explanation:
Used an ROI calculator:
Answer:
The
90
adult tickets sold were
45
%
of the
200
tickets sold to the concert.
Explanation:
Since
90
tickets out of
200
were adult tickets, the percentage (represented as
x
) can be calculated by this equation:
200
×
x
100
=
90
2
200
×
x
100
=
90
2
x
=
90
Divide both sides by
2
.
x
=
45
Step-by-step explanation: