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2 years ago

6

the population of a country double every 10 years from 1950 to 1980.what was the percentage increase in population during this t

ime

1 answer:

fredd [130]2 years ago

3 0

700% increase.

Step-by-step explanation:

The duration was 3 decades, or 30 years. The population starts at 100%, then doubles to 200% (decade 1), then 400% (decade 2), then 800% (decade 3).

800% - 100% = 700%

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Eliminate the parameter

8090 [49]

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In the question given correct parameter is - 2) $y = x -2, x\geq 1$

Method -

$x= t^2 + 1$ ........................(1)

$y = t^2 - 1$ ..........................(2)

Let's solve the equation 1,

⇒ $x = t^2 +1$

⇒ $t^2 = x - 1$

Put the value of t² in equation 2

$y =t^2 - 1 \\y = x -1 -1\\y = x - 2$

<u>Here we got the y parameter as </u> $y = x -2$

<u>So the option no .2 is the correct option</u> 2) <u> </u> $y = x -2, x\geq 1$

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