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alexira [117]
3 years ago
11

I need to find the percentage of each round to the nearest cent if necessary.

Mathematics
1 answer:
Ludmilka [50]3 years ago
8 0
8 1/2% of 4300 is 365.5

7 1/4% of 8200 is 594.5

9.2% of 3600 is 331.2
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Solve the following system by any method -8x-8y=0 -8x+2y=-20
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                     \fbox{Solution by using Matrix} 

\text{Linear Equation} = -8x-8y=0 , -8x+2y=-20

\text{Rewrite the linear equations above as a matrix} 

\left[\begin{array}{ccc}8&-8&0\\-8&2&-20\\\end{array}\right] 

\text{Apply to Row2 : Row2 + Row1} 

\left[\begin{array}{ccc}8&-8&0\\-8&-6&-20\\\end{array}\right] 

\text{ Simplify rows} 

\left[\begin{array}{ccc}8&-8&0\\0&1&10/3\\\end{array}\right] 

\text{Note: The matrix is now in echelon form.}\text{The steps below are for back substitution.} 

\text{Apply to Row1 : Row1 + 8 Row2} 

\left[\begin{array}{ccc}8&0&80/30\\0&1&10/3\\\end{array}\right] 

\text{ Simplify rows}  

\left[\begin{array}{ccc}1&0&10/3\\0&1&10/3\\\end{array}\right] 

\text{Therefore, the solution is} 

x= \dfrac{10}{3} \ \text{and} \ \ y=\dfrac{10}{3}
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Nutka1998 [239]

12Answer:

Step-by-step explanation:

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Yeah, She can.

Step-by-step explanation:

Simply using 8/5

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Three more than two times in a expression
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