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Katyanochek1 [597]
3 years ago
14

If the number of bacteria in a colony triples every 60 minutes and the population is currently 2,000 bacteria, what will the pop

ulation be in 240 minutes and is the growth modeled by a linear function or a exponential function? A) 20,000; linear B) 20,000; exponential C) 162,000; linear D) 162,000; exponential
Mathematics
1 answer:
lora16 [44]3 years ago
8 0
It's exponential. And you will triple the size every 60 minutes in 240 minutes, so triples 4 times. 2000 times 3 is 6000. 6000 times 3 is 18000. 18000 times 3 is 54000. 54000 times 3 is 162000 so D is the answer. 
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7 0
2 years ago
HELP PLEASE ILL MARK BRAINLIEST
gavmur [86]

Answer:

B. \frac{3+\sqrt{29} }{2}

Step-by-step explanation:

\frac{-(-3)\sqrt{(-3^2-4(1)(5)} }{(2)(1)}

=\frac{-(-3)+\sqrt{29} }{2}

4 0
3 years ago
Read 2 more answers
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8 0
3 years ago
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Use the limit theorem and the properties of limits to find the limit.<br> Picture provided below
sashaice [31]

Answer:

b. 1/2

Step-by-step explanation:

lim        (x -3)(x +2)

x-->-∞    ---------------

              2x^2 + x +1

= lim        (x^2 -3x +2x - 6)

x-->-∞    -----------------------

              2x^2 + x +1

= lim        (x^2 -x - 6)

x-->-∞    -----------------------

              2x^2 + x +1

When we plug in x = -∞, we get indeterminate form.

Now we have to use the L'hospital rule.

d/dx (x^2 - x - 6) = 2x -1

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Now apply the limit

lim            (2x - 1) / (4x + 1)

x--->-∞

Here we have to degree of the numerator and the denominator of the same. In this case, if x --> -∞, we get the result as the coefficient of the leading term as the result.

According to the rule, we get

= 2/4

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The answer is 1/2

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3 0
3 years ago
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What are the solutions to the equation √x2+2x-10=√x+20
Marianna [84]
<span>√x^2+2x-10=√x+20
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 therefore the solutions are
<span> x = –6, x = 5
</span>the answer is 
<span>B. x = –6, x = 5</span>
5 0
4 years ago
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