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True [87]
3 years ago
7

Write a function for p(x), the profit from selling x necklaces.

Mathematics
1 answer:
Dovator [93]3 years ago
3 0

ANSWER

p(x) = 6x  -  15

EXPLANATION

The revenue from selling x necklaces is

r(x) = 10x

The cost of buying x necklaces is

c(x) = 4x + 15

The profit from selling x necklaces is

p(x) = r(x) - c(x)

We substitute the functions to get;

p(x) = 10x- (4x + 15)

p(x) = 10x- 4x  -  15

p(x) = 6x  -  15

Therefore the function for the profit is

p(x) = 6x  -  15

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2 years ago
A rectangle has a length of (x + 4) centimeters and a width of 12x centimeters. If the perimeter is 26 centimeters, what is the
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Answer:

The width of rectangle is W=\frac{108}{13}\ cm  or  8\frac{4}{13}\ cm

Step-by-step explanation:

we know that

The perimeter of rectangle is equal to

P=2(L+W)

where

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W is the width of rectangle

we have

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substitute

26=2(x+4+12x)

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x=\frac{18}{26}

simplify

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<em>Find the width of rectangle</em>

W=12x\ cm

substitute the value of x

W=12(\frac{9}{13})=\frac{108}{13}\ cm

Convert to mixed number

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Step-by-step explanation:

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