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3 years ago

Need help quick please thanks

Mathematics

1 answer:

Sloan [31]3 years ago

8 0

Start by FOILing: First, Outer, Inner, Last.

3x•x= 3x^2; 3x•2= 6x; 2•x= 2x; 2•2= 4

Put it all together

3x^2 + 6x + 2x + 4

Combine like terms to get your answer

3x^2 + 8x + 4

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If x is positive, is

vredina [299]

They are equal.

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since $x>0$ , and

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2 years ago

an insect population grows at a rate of 25% per year.if its initial population is 4.2 million what will be its population in thr

marusya05 [52]

The population after 3 years would be 8.20 millions.

Step-by-step explanation:

Given,

Initial population = I = 4.2 million

Growing rate = r = 25%

If the initial population and growing rate is given, the formula to calculate the population (x) after n years would be:

$x = I * (1 + \frac{r}{100} )^{n}$

By putting the values in the equation, we get

$x = 4.2 * (1 + \frac{25}{100} )^{n}$

The population after 1st year (x1) would be

$x1 = 4.2 * (1 + \frac{25}{100} )^{1}$

x1 = 5.25 million

Similarly,

$x2 = 4.2 * (1 + \frac{25}{100} )^{2}$

x2 = 6.56 million

$x3 = 4.2 * (1 + \frac{25}{100} )^{3}$

x3 = 8.20 million

Hence, the population after 3 years would be 8.20 millions.

But, if you are asking about the total population at that time. It would be

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7 0

4 years ago

3.) Find the measure of the missing angle X:<br> Xº<br> 120°<br> 70°

Otrada [13]

Answer:

x=50

Step-by-step explanation:

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3 years ago

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vichka [17]

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3 years ago

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