Answer:
Area = 30 in.
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Step-by-step explanation:</h3>
the formula for an area of a trapezoid is A = (a+b)/2 × h
a = base (or bottom)
b = 2nd base (or top)
h = height
set up your equation as A = (10 + 5)/2 × 4
A = 15/2 × 4
A = 7.5 × 4
A = 30
The area of the trapezoid is 30 in.
Let the price of the goldfish be x
Let the price of the rainbow fish be y
Anna bought 8 fish, therefore, Anna paid 8x for the gold fish
Anna bought 2 rainbow fish, therefore, Anna paid 2y for the rainbow fish
We know that the total amount that Anna paid is 37$.
Therefore:
8x + 2y = 37 ..................> equation I
Now, we know that the rainbow fish cost 6$ more than the goldfish (since the verb "cost" is plural, therefore the total payment of rainbow fish is 6$ more than the total payment of gold fish).
Based on this,
2y + 6 = 8x
2y = 8x - 6 ...................> equation II
Substitute by equation II in equation I, we can get the following equation:
8x + 8x - 6 = 37
16x = 43 ................> The desired equation (equation III)
Solving equation III, we can calculate the price of one gold fish as follows:
16x = 43
x = 2.6875$
If we substitute by the value of x in equation I, we can calculate the price of one rainbow fish as follows:
8(2.6875) + 2y = 37
y = 7.75$
3 + .4+.005 is the expanded form
The first month or one month is all it takes.
In one month both have 38 dollars
