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2 years ago

I need help with questions 3 and 4

Mathematics

1 answer:

nlexa [21]2 years ago

6 0

Step-by-step explanation:

$7billion = 5 {e}^{15r} \\ 1.4billion = {e}^{15r} \\ ln(1.4 \: billion) = 15r \\ 21.0597 = 15r \\ r = 1.404$

$4) \\ t = 0 \: y= 200 \\200 = a {e}^{0} \\ a = 200 \\ 800 = 200 {e}^{8k} \\ 4 = {e}^{8k} \\ ln(4) = 8k \\ k = 0.1733$

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lilavasa [31]

Answer:

The answer is B. $y = x^2 + 6x + 5$

Step-by-step explanation:

Because $y = (x + 3)^2 - 4 = x^2 + 6x + 9 - 4 = x^2 + 6x + 5$

So the answer in this question is B.

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2 years ago

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Step-by-step explanation:

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3 years ago

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Irina-Kira [14]

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2 years ago

(6x^2+3x) + (x^2 - 4x -3)<br> plz help

notsponge [240]

Answer:

7x^2 - x -3

Step-by-step explanation:

(6x^2+3x) + (x^2 - 4x -3)

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2 years ago

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Radda [10]

<h3>Solution:</h3>

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<h3>Answer:</h3>

x = 8

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2 years ago

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