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charle [14.2K]
3 years ago
11

How much 9% saline solution should be mixed with 80 Cc of a 17% saline solution to produce a 13% saline solution?

Mathematics
1 answer:
forsale [732]3 years ago
6 0

Answer:

80 cc.

Step-by-step explanation:

We work in amounts of salt in the solutions:

0.09x + 0.17*80= 0.13(x+ 80)  where x is the required volume of 9% solution.

0.09x + 13.6 = 0.13x + 10.4

13.6 - 10.4 = 0.13x - 0.09x

3.2 = 0.04x

x = 3.2 / 0.04

x = 80

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kompoz [17]

Answer:

Paul has negative worth of $2,900

His statement is invalid as he did not consider all assets and debts in aggregate.

Step-by-step explanation:

The net worth of Paul is the total asset owned by him less the total of debts owed by him.

Paul's total assets can computed thus:

Stock portfolio                 $21,000

Home worth                     $365,000

Car worth                          $19,000

Total assets                       $405,000

Paul's total debts can be computed as follows:

Mortgage loan                     $362,000

Car loan                                $16,250

credit card debt                     $11,750

Student loan                          $17,900

Total debts                             $407,900

The amount of debts owed by Paul is $2,900($405,000-$407,900) more than his asset worth,which implies that Paul is indebted to the tune of $2,900,hence has negative worth.

6 0
3 years ago
Which expression is equivalent to(2^3)^-5
Nady [450]

Answer:

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Step-by-step explanation:

(2^3)^5

=2^(3*5)

= 2^15

3 0
3 years ago
A scale measures weight to the nearest 0.1 pounds. Which is the most appropriate way to report weight using this scale ?
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The answer is A
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8 0
3 years ago
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Answer:

1/7 or 14.3%

Step-by-step explanation:

30% of 750 = 225  (females who study chemistry)

60% of 2250 = 1350  (males who study chemistry)

1575 = total students studying chemistry

P (female chemistry student) = 225/1575 = 1/7 (simplified)

1/7 = 14.3%

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2 years ago
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Answer: (8, 45)?

Step-by-step explanation:

3 0
3 years ago
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