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Rasek [7]
3 years ago
8

Hurry I'm timed !!!pleas

Mathematics
1 answer:
shepuryov [24]3 years ago
3 0

Answer:

A. whole numbers, integers , rational numbers, natural numbers, real numbers

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A doctor orders 20 grams of a 52% solution of a certain medicine. The pharmacist has only bottles of 40% solution and bottles of
Anvisha [2.4K]
Try, please, this:
1) Imagine, that pharmacist used 'x' gr. of 40% solution and 'y' of 70% solution.
Together (20 gr. of 52% sol.) it will be x+y=20.
2) From other side, the pharmacist combined 40x and 70y gramms, after obtaining together it is 52(x+y) gramms. In other words 40x+70y=52(x+y)
3) 
\left \{ {{x+y=20} \atop {40x+70y=52(x+y)}} \right. \ =\ \textgreater \  \  \left \{ {{y=8} \atop {x=12}} \right.
Answer: 8 gr. of 70% solution and 12 gr. of 40%.
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Z+ 12w when z=8 and w=4
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Answer:

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Step-by-step explanation:

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