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Ronch [10]
3 years ago
11

{-4x + 4y = -8 { x - 4y = -7

Mathematics
1 answer:
o-na [289]3 years ago
4 0
I assume you're doing elimination, so

The + 4y and - 4y would cancel out, giving you:

-4x = -8

x = -7

Then, you subtract the x values and add the -8 and -7

-3x = -15

Your answer will be

*x = 5
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Answer:

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Step-by-step explanation:

Given : You are to give an injection of a drug. The dosage is 0.4 mg per kilogram of bod The concentration of the drug in vial is listed as 500 ug/ml. The patient's chart Hosts weight as 168 pounds.

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We know that,

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Patient's weight in kg =168\times 0.453592=76.203456  kg

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500\ \text{micro grams/ml}= 500\times 0.001\ \text{mg/ml} = 0.5\ \text{mg/ml}

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Step-by-step explanation:

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