Jose Rodriguez's checking account had a starting balance of $1,234.56. He wrote a check for $115.12 End of exam for plumbing sup
2 answers:
Answer:
$894.44
Step-by-step explanation:
If Jose Rodriguez has a starting balance of $1234.56 and he writes a check of $115.12 for pumbing supplies and a check for $255 for a loan payment.
He has a remaining balance of:
If he deposited $96.75 in his account the day before these payments, then this amount is included in the starting balance of $1234.56.
Therefore Jose has a current balance of $894.44
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Given:
The system of equations:
To find:
The number that can be multiplied by the second equation to eliminate the x-variable when the equations are added together.
Solution:
We have,
...(i)
...(ii)
The coefficient of x in (i) and (ii) are 1 and respectively.
To eliminate the variable x by adding the equations, we need the coefficients of x as the additive inverse of each other, i.e, a and -a So, a+(-a)=0.
It means, we have to convert into -1. It is possible if we multiply the equation (ii) by -5.
On multiplying equation (ii) by -5, we get
...(iii)
On adding (i) and (iii), we get
Here, x is eliminated.
Therefore, the number -5 can be multiplied by the second equation to eliminate the x-variable.