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DENIUS [597]
3 years ago
7

Help me please don't understand geometry and I have a test tomorrow

Mathematics
1 answer:
posledela3 years ago
5 0
It's alright just study
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A city currently has 31,000 residents and is adding new residents steadily at the rate of 1200 per year. If the proportion of re
dlinn [17]

Answer:

Population of the city after 7 years from now, P(7) = 6370

Given:

Initial Population, P_{i} = 31000

rate, r(t) = 1200 /yr

S(t) = [/tex]\frac{1}{1 + t}[/tex]

Step-by-step explanation:

Let the initial population be  P_{i} = 31000

The population after T years is given by the equation:

P(T) = P_{i}S(T) + \int_{0}^{T}S(T - t)r(t) dt          (1)

Thus, the population after 7 years from now is given by using eqn (1):

P(7) = \frac{3100}{1 + 7} + 1200\int_{0}^{7}\frac{1}{8 - t} dt

P(7) = 3875 - 1200ln(8 - t)|_{0}^{7}

P(7) = 3875 - 1200ln(8 - t)|_{0}^{7}

P(7) = 3875 - 1200(ln(1) - ln(8))

P(7) = 3875 + 2495 = 6370

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3 years ago
Which of the following equations represent a line that is parallel to the line with the equation
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Answer:

c

Step-by-step explanation:

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Solve the iniquality 6x - 8 > 4x + 26
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Answer:

x > 17

Step-by-step explanation:

Add 8 to both sides:

6x - 8 > 4x + 26

6x > 4x + 34

Subtract 4x from both sides:

2x > 34

Divide each side by 2:

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the answer to the question is C

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