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4 years ago

Average of 35, 45 and x is equal to five more than twice x. Find x

Mathematics

1 answer:

maxonik [38]4 years ago

4 0

Answer:

x=75

Step-by-step explanation:

35+45+x=2x+5

80+x=2x+5

80-5=2x-x

75=x

I hope I was of help and plz mark this answer as brainliest

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3 years ago

n many population growth problems, there is an upper limit beyond which the population cannot grow. Many scientists agree that t

givi [52]

Answer:

$\frac{dP}{dt} = rP(1 - \frac{P}{K}) = 0.017P(1 - \frac{P}{16})$

Step-by-step explanation:

The logistic function of population growth, that is, the solution of the differential equation is as follows:

$P(t) = \frac{KP_{0}e^{rt}}{K + P_{0}(e^{rt} - 1)}$

We use this equation to find the value of r.

In this problem, we have that:

$K = 16, P_{0} = 2, P(50) = 4$

So we find the value of r.

$P(t) = \frac{KP_{0}e^{rt}}{K + P_{0}(e^{rt} - 1)}$

$4 = \frac{16*2e^{50r}}{16 + 2*(e^{50r} - 1)}$

$4 = \frac{32e^{50r}}{14 + 2e^{50r}}$

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Applying ln to both sides of the equality

$50r = 0.8459$

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$\frac{dP}{dt} = rP(1 - \frac{P}{K}) = 0.017P(1 - \frac{P}{16})$

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3 years ago

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4 years ago

Read 2 more answers

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Answer:

y = - $\frac{28}{5}$