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3 years ago

Solve for w. 7w-36 = -2(w-9)

Mathematics

2 answers:

valentina_108 [34]3 years ago

6 0

Answer:

The answer to the question is W=6

iren [92.7K]3 years ago

3 0

Answer:

w= 6

7w-36= -2(w-9)

7w-36= -2w+18 Multiply Parenthesis by -2

7w+2w= 18+36 Move Terms

9w= 54 Collect like terms

/9 . /9

w= 6

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Step-by-step explanation:

Exponential population growth:

An exponential model for population growth has the following model:

$P(t) = P(0)(1+r)^t$

In which P(0) is the initial population and r is the growth rate, as a decimal.

It grows with a doubling time of 10 years.

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$P(t) = P(0)(1.0718)^t$

Determine how long it will take for the population to quadruple.

This is t for which P(t) = 4P(0). So

$P(t) = P(0)(1.0718)^t$

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$\log{(1.0718)^t} = \log{4}$

$t\log{1.0718} = \log{4}$

$t = \frac{\log{4}}{\log{1.0718}}$

$t = 20$

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5 0

3 years ago