The area of a trapezoid is the height times the average of the two bases, mathematically:
A=h(b1+b2)/2, in this case h=6in, b1=9in, and b2=7in so
A=6(9+7)/2
A=6*16/2
A=48in^2
<span>7x - 5 = 2
add 5 to both sides
</span><span>7x - 5+5 = 2+5
7x=7
Divide both sides by 7 to get x by itself
x=1 </span>
proportional relationships have constant ratios.
the graph is a line, so it is a proportional relationship. (A)
the function is in the form y=kx (proportional function) (C)
Find the ratio of the tables: (B)
D
All represent a proportional relationship
•in fraction form the answer is 2/15
•in percentage form the answer is 13.33333333...%
the way to figure this out is to add all the numbers up and divide it by the number of red marbles :)