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jeyben [28]
2 years ago
12

A construction company transported 8 stones that weighed a total of 70.22 kilograms. How much did each stone weigh?

Mathematics
1 answer:
pishuonlain [190]2 years ago
5 0

Answer:

8.7kilos

Step-by-step explanation:

70.22 divided by 8

hope this helps!

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Solve the system of equations algebraically.
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Step-by-step explanation:

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Now replace this in the first equation.

4x-3y=8\\4(\frac{5+4y}{5})-3y=8\\\frac{20+16y}{5}-3y=8

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\frac{20}{5}+\frac{16y}{5}-3y=8

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Subtract 4 from both sides to isolate y.

4-4+\frac{16y}{5}-3y=8-4

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Solve the difference.

\frac{16-(3)(5)}{5}y=4\\

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\frac{1}{5}y=4

Multiply by the reciprocal or the inverted fraction that is next to y to isolate it.

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Now, in order to find x, replace y in any of the two equations.

5x-4y=5\\5x-4(20)=5\\5x-80=5\\5x=5+80\\5x=85\\x=\frac{85}{5}\\x=17

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Answer:

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Step-by-step explanation:

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