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icang [17]
4 years ago
8

Fimd how many quarts of 5% butterfat milk and 2% butterfat mild shoulf be mixed to yield 75 quarts of 4% butterfat milk. How man

y quarts of each type are there? Solve using elimination.
Mathematics
1 answer:
Elodia [21]4 years ago
5 0
.05x + .02(75-x) = .04(75) solve for x
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Situation:
Arturiano [62]

Answer:

t = 6162  years

Step-by-step explanation:

Apparently you are asked to use the constant k = 0.0001 instead of the most common 0.00012. We'll answer the problem using such number you typed, but make sure that there is no omission in your typing.

The equation to use is that for carbon decay:

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0.54\,\,N_0=N_0\,e^{-0.0001\,\,t}\\\frac{0.54\,\,N_0}{N_0}=e^{-0.0001\,\,t}\\0.54=e^{-0.0001\,\,t}\\ln(0.54)=-0.0001\,\,t\\t=\frac{ln(0.54)}{-0.0001} \\t=6161.86\,\,years

which rounded to the nearest year as requested gives :

t = 6162  years

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A new basketball is on sale for $24.98. If this is a discount of 16%, what was the original cost of
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