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Sveta_85 [38]
3 years ago
7

You drink a cup of coffee with 120 mg of caffeine. Each

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
8 0

Answer:

91.2 mg of coffee left in your system 2 hours from consumption

Step-by-step explanation:

120 x .12 = 14.4

14.4 x 2 = 28.8

120 - 28.8 = ...

91.2 mg

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If r(x) = 2 – x2 and w(x) = x – 2, what is the range of (w circle r) (x)?
VashaNatasha [74]

Answer:

(-\infty, 0)

Step-by-step explanation:

(w circle r) (x) is the composite function(w of r(x)), that is, w(r(x))[/tex]

We have that:

r(x) = 2 - x^{2}

w(x) = x - 2

Composite function:

w(r(x)) = w(2 - x^{2}} = 2 - x^{2} - 2 = -x^{2}

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So the range(the values that y assumes), is:

(-\infty, 0)

3 0
3 years ago
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Step-by-step explanation:

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3 years ago
I need help with number 46.
grigory [225]

Answer:

1:3

Step-by-step explanation:

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6 0
3 years ago
How do I solve<br> -3x+y=24<br> -2x=+18+5y
ExtremeBDS [4]

Answer:

Let's solve by eliminating x. Since 18 is the lowest common multiple , let's multiply the first equation by 3 and the second by -2.

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Add the two equations.

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Substitute y=−2 into either of the 2 equations, I'll just use the second one.

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Step-by-step explanation: that is your anwser

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3 years ago
dexamethasone 4 mg/1 ml is available. the MD orders 6000 mcg. how much will the nurse give? (Round to the tenth)​
aleksley [76]

Answer:

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Step-by-step explanation:

The abbreviation mcg stands for "microgram," or 10^-6 grams. The abbreviation mg stands for "milligram," or 10^-3 grams. The relationship between these is ...

  1 mg = 1000 mcg

<h3>Dose</h3>

The order for 6000 mcg is an order for 6(1000 mcg) = 6(1 mg) = 6 mg. At 4 mg/mL, the quantity of dexamethasone required is ...

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The nurse will give 1.5 milliliters of dexamethasone.

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