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aliya0001 [1]
3 years ago
9

Please help me out and show work

Mathematics
1 answer:
lina2011 [118]3 years ago
4 0

Answer:

s(x)=\frac{0.2}{x+5}

Step-by-step explanation:

In 5 liters, there is 4% salt.

Lets find liters of salt.

First, converting 4% to decimal (dividing by 100):

4% = 4/100 = 0.04

0.04 * 5 = 0.2

So, there is 0.2 liters of salt.

Now, x liters of water is added to total, so total is now:

5 + x

The concentration of salt will be amount of salt divided by amount of salt water solution.

Amount of salt = 0.2 (as seen above)

Amount of new salt water solution = x + 5

So,

Concentration of salt in new solution is  \frac{0.2}{x+5}

2nd choice is right.

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<u>Green:</u>

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Which of the following represents "the difference between ten and a number is the sum of eight and a number"?
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Step-by-step explanation:

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3 years ago
The ages of the winners of a cycling tournament are approximately bell-shaped. The mean age is 27.2 years, with a standard devia
elena-14-01-66 [18.8K]

Answer:

a. z-score = -1.2

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a. Transformation to z-score

Mathematically;

z-score = (x - μ)/σ

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z-score = (23-27.2)/3.5 = -1.2

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