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4 years ago

13

After working 24 hours Zoe made $234. After working for 40 hours, Zoe made $390 predict how much she would make after 10 hours o

f work

1 answer:

guajiro [1.7K]4 years ago

8 0

So, we know that 40 hours is $390 and 4 * 10 = 40, therefore, we just have to divide $390 by 4 to get $97.5, meaning that Zoe made $97.5 in 10 hours of work.

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<span>Multiply the 2nd equation by (-4). This will eliminate the x's when you add the two new equations together.
</span> $\left \{ {{4x-3y=16\:\:\:\:\:\:\:\:\:\:} \atop {-2x+4y=-2\:*(-4)}} \right.$
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$\boxed{\boxed{y = \frac{12}{5}}}\end{array}}\qquad\quad\checkmark$

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