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musickatia [10]
3 years ago
15

A 20% alcohol solution was mixed with pure alcohol at a ratio of 4:1. What is the percentage of alcohol in the new solution?

Mathematics
1 answer:
gtnhenbr [62]3 years ago
8 0

Answer:

36%

Step-by-step explanation:

20 % solution in 4/5 parts of the mmixture gives 80/5

100% solution in 1/5 parts of the mixture gives 100/5

total would give 80+100/5= 36% solution

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Mkey [24]
The Answer is C, 5.27 x 10^6

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2 years ago
At the circus, 3 adult tickets and 4 child tickets cost $47, and 6 adult tickets and 2 child tickets cost $64. Which system of l
Artemon [7]

Answer:

The adult tickets cost $9 each. The child tickets cost $5 each.

X = $9 and Y = $5

Step-by-step explanation:

$9 x 6 = $54

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For the first one, do the same.

$9 x 3 = $27

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Add them and you get $47

8 0
3 years ago
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bagirrra123 [75]

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Step-by-step explanation:

5 0
3 years ago
5. If the covariance between the variables x and y is 18 and the variance
klasskru [66]

Answer:

The coefficient of  correlation=0.5

Step-by-step explanation:

We are given that

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We know that

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Using the formula

r=\frac{18}{\sqrt{16}\times \sqrt{81}}

r=\frac{18}{4\times 9}

r=0.5

Hence, the coefficient of  correlation=0.5

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