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Stella [2.4K]
3 years ago
6

The ratio of boy campers to the number of girl campers is 8:7.  If there are a total of 195 children, how many are boys and how

many are girls?
Mathematics
1 answer:
Luden [163]3 years ago
7 0
8x-amount\ of\ boys\\7x-amount\ of\ girls\\\\8x+7x=195\\
15x=195\ \ \ |Divide\ by\ 15\\x=13\\\\
8x=8*13=104\\
7x=7*13=91\\\\
\textbf{There\ are\ 104\ boys\ and\ 91\ girls.}
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Answer:

The answer is

<h2>{f}^{ - 1} (x) =  \frac{x +3 }{25}</h2>

Step-by-step explanation:

f(x) = 25x - 3

To find the inverse of f(x) , equate f(x) to y

That's

y = f(x)

We have

y = 25x - 3

Next interchange the terms that's x becomes y and y becomes x

x = 25y - 3

<u>Next solve for y</u>

Move 3 to the other side of the equation

That's

25y = x +  3

<u>Divide both sides by 25</u>

\frac{25y}{25}  =  \frac{x + 3}{25}

We have the final answer as

{f}^{ - 1} (x) =  \frac{x +3 }{25}

Hope this helps you

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