Answer: the amount of interest that he would earn is $90.
Step-by-step explanation:
The formula for determining simple interest is expressed as
I = PRT/100
Where
I represents interest paid on the amount of money deposited.
P represents the principal or amount of money deposited.
R represents interest rate on the deposit.
T represents the duration of the deposit in years.
From the information given,
P = $4500
R = 2%
T = 1 year
Therefore,
I = (4500 × 2 × 1)/100
I = $90
Multiply the second row by -1 to cancel out the 7x.
9x+7y=10
-7x-7y=-14
2x=-4
x=-2
9(-2)+7y=10
-18+7y=10
7y=28
y=4
She would be able to make 12 piles 12x4=48 50-48=2 2 tiles left over
The like terms are the a terms and the constants. If you combine them, you will get 24, as the negative a and the positive a cancel each other out.
