Help me please

1 answer:

5 0

Operations with variables can give you excluded values by making the denominator equal to zero.

Ex. 48/60 always equals to 4/5 but 4x/6x is not always equal to 2/3 because when you make x equal to zero it makes the equation invalid.

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Jack is learning to save, spend, and give his money away. He had determined to give away 10% of his summer job earnings. If he g

nadezda [96]

Answer:

$2304

Step-by-step explanation:

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7 0

3 years ago

Read 2 more answers

If you buy six pens and one mechanical pencil, you'll get only $1 change from your $10 bill. but if you buy four pens and two me

xxTIMURxx [149]

Let p be the prize of a pen and m the prize of a mechanical pencils. If you buy six pens and one mechanical pencil, you spend 6p+m. We know that this equals 9, because you get 1$ change from a 10$ bill.

Similarly, if you buy four pens and two mechanical pencils, you spend 4p+2m, which is 8$, because now you get a $2 change. Put these equation together in a system:

$\begin{cases} 6p+m=9\\4p+2m=8\end{cases}$