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sergey [27]
3 years ago
8

!!!PLEASE ANSWER!!!

Mathematics
1 answer:
Rasek [7]3 years ago
4 0

Answer:

Let x = no. of books

:

Cost = 12.50x + 54150

:

Revenue = 25x

:

Rev = cost

25x = 12.5x + 54150

25x - 12.50x = 54150

 

12.5x = 54150

x = 54150%2F12.5

x = 4332 books need to be sold to cover production costs

:

:

Check:

c = 12.50(4332) + 54150

c = 54150 + 54150

c = 108300

:

r = 25(4332)

r = 108300

Step-by-step explanation:

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What does proportional relationship means?
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Answer:

A proportional relationship is one in which two quantities vary directly with each other. We say the variable y varies directly as x if: y = k x. for some constant k , called the constant of proportionality .

Step-by-step explanation:

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3 years ago
2x2−5x=3 Separate the two values with a comma.
nirvana33 [79]
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hope this will help you 
4 0
3 years ago
A large stand of fir trees occupies 24 hectares. The trees have an average density of 1 tree per 20m squared. A forester estimat
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Answer:

The yield of the stand if one-tenth of the trees are cut is 360000 board-feet.

Step-by-step explanation:

First, let is find the total amount of fir trees that occupies the area of 24 hectares. (1 hectare = 10000 square meters)

n = \sigma \cdot A

Where:

\sigma - Surface density, measured in trees per square meter.

A - Total area, measured in square meters.

Given that \sigma = \frac{1}{20}\,\frac{tree}{m^{2}} and A = 24\,h, the total amount of fir trees is:

n = \left(\frac{1}{20}\,\frac{trees}{m^{2}}  \right)\cdot (24\,h)\cdot \left(10000\,\frac{m^{2}}{h} \right)

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It is known that one-tenth of the tress are cut, whose amount is:

n_{c} = 0.1 \cdot n

n_{c} = 0.1 \cdot (12000\,trees)

n_{c} = 1200\,trees

If each tree will yield 300 board-feet, then the yield related to the trees that are cut is:

y = S\cdot n_{c}

Where:

S - Yield of the tress, measured in board-feet per tree.

n_{c} - Amount of trees that will be cut, measured in trees.

If n_{c} = 1200\,trees and S = 300\,\frac{b-ft}{tree}, then:

y = \left(300\,\frac{b-ft}{tree} \right)\cdot (1200\,trees)

y = 360000\,b-ft

The yield of the stand if one-tenth of the trees are cut is 360000 board-feet.

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3 years ago
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Two times the difference of x and one = 2(x - 1)

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