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N76 [4]
3 years ago
14

Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of c

alcium? Round to the nearest tenth.

Mathematics
2 answers:
Serga [27]3 years ago
8 0
Heya !

Check the attachment.
Hope it helps you :)

Margarita [4]3 years ago
3 0
Set up a proportion:

\frac{8}{270} = \frac{x}{72.5}

The numerator represents fluid ounces of milk, and the denominator represents milligrams of calcium.

Simplify the first fraction to make multiplication easier:

\frac{8}{270} \div  \frac{2}{2} =  \frac{4}{135}
\frac{4}{135} = \frac{x}{72.5}

Cross multiply the fractions:

72.5 * 4 = 290
135x = 290

Divide both sides by 135 to get x by itself:

290 \div 135 = 2.1
x = 2.1


2.1 fluid ounces of milk provide 72.5 milligrams of calcium.
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Hello from MrBillDoesMath!

Answer:

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Discussion:

Using matrix multiplication we find the equations:


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2x  + 3y = 36                   (B)


Next, compute

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          -y = -20  =>

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Substituting this y value in (A) gives

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The answer is the first choice ( -12, 20)


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Find a line going through the point
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\large\boxed{y\in(-6,\ \infty)}

Step-by-step explanation:

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(2)\\\\4y-4\geq12\qquad\text{add 4 to both sides}\\\\4y-4+4\geq12+4\\\\4y\geq16\qquad\text{divide both sides by 4}\\\\\dfrac{4y}{4}\geq\dfrac{16}{4}\\\\y\geq4

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