A certain type of bacteria doubles every 7 hours. If you started with 36 bacteria, how many would you have after 28 hours?

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

6 0

I would have 144 because you just times 4 and 36

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arsen [322]

We know that $\overline{x}=8$ so:

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We want to calculate:

$\sum\limits_{k=1}^7\,\big(2x_k-3\big)^2=\sum\limits_{k=1}^7\,\big(4x_k^2-12x_k+9\big)=\\\\\\=\sum\limits_{k=1}^7\,4x_k^2-\sum\limits_{k=1}^7\,\big12x_k+\sum\limits_{k=1}^7\,9=4\sum\limits_{k=1}^7\,x_k^2-12\sum\limits_{k=1}^7\,x_k+\sum\limits_{k=1}^7\,9=\\\\\\=4\cdot672-12\cdot56+7\cdot9=2688-672+63=\boxed{2079}$

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What is the slope of the line? Please explain your answer.

Masteriza [31]

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Answer correct plz if u steal points ill report

OverLord2011 [107]

Answer:

Okay look at the graph, at x = 11, the y of the line is between 500 and 450. 500+450=950

950/2=475 so (11,475)

Let's take x=6, the y would then be 600. If x=9, y would be 525. Just try to look at the graph and see from there. Let me know the answer.