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Lemur [1.5K]
3 years ago
10

Write an expression to represent the perimeter of the rectangle:2/3x+101/3x+5

Mathematics
1 answer:
Sladkaya [172]3 years ago
3 0

Answer:

2x+30

Step-by-step explanation:

The formula for perimeter is

P = 2(l+w)

 = 2(2/3 x+10 + 1/3 x+5)

 = 2(2/3 x + 1/3 x+10+5)

  = 2 (x+15)

Distribute

2x+30

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Answer:

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Model that expresses the growth rate of the population is,

P(t) = 286(1.009)^{t-1995}

Here, t = year

a). For P = 311 million people

   311 = 286(1.009)^{t-1995}

   \text{log}(\frac{311}{286})=\text{log}(1.009)^{t-1995}

   log(311) - log(286) = (t - 1995)log(1.009)

   2.4928 - 2.4564 = (t - 1995)(0.00389)

   \frac{0.03639}{0.00389}=t-1995

   t = 1995 + 9.4

   t = 2004

In year 2004 population of the country will be 311.

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