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1 year ago

PLEASE AM BEGGINNN YOUUUUU

Mathematics

1 answer:

Vikentia [17]1 year ago

3 0

Answer:

Step-by-step explanation:

A)

A - the population after its decrease

x - the number of years in which there has been a decrease in population

Hence,

$\displaystyle\\A=30000-475x\\A+475x=30000-475x+475x\\A+475x=30000\\A+475x-A=30000-A\\475x=30000-A$

Divide both parts of the equation by 475:

$\displaystyle\\x=\frac{30000-A}{475}$

B)

$\displaystyle\\x=\frac{30000-24300}{475} \\\\x=\frac{5700}{475}\\\\x=\frac{12*475}{475} \\\\x=12\ years$

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Graphing $y=- \frac{2}{3}x+490$ using slope-intercept method:
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The graph of this function is shown below. The intercepts are labelled at:
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-----------------------------------------------------------------------------------------------------------

Next month's profit equation

$2x+3y=1593$

Rewriting this into slope-equation form

$3y = -2x+1593$
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$y= - \frac{2}{3}+531$

The gradient, $m$ , equals to $- \frac{2}{3}$
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The equation still has the same gradient with last month's profit equation but different y-intercept.

-------------------------------------------------------------------------------------------------------------

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