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25.02.2021 •
Mathematics
PLZ HELP ILL MARK U BRAINLIEST!!
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Ответ:
not sure sorry seems very hard
Step-by-step explanation:
Ответ:
it's A. 20!
Step-by-step explanation:
Ответ:
The equations
The solution
55 dimes and 25 quarters
Step-by-step explanation:
Given
Let
Required
Set up a system of equation to calculate the number of each coin
The total coin of 80 implies that:
A dime = $0.1
A quarter = $0.25
So, the worth of the coin is:
So, the equations are:
Next, solve for x and y
Multiply the second equation by 4
Subtract from
Solve for y
We have:
Hence, there are 55 dimes and 25 quarters