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3 years ago

Answer please I’ll give brainlyest

Mathematics

1 answer:

Nata [24]3 years ago

4 0

Answer:

Step-by-step explanation:

1.22474 Delete others keep the 1.2

>:D

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In a lab, a scientist is growing bacteria for a study. The scientist begins with a bacteria

Diano4ka-milaya [45]

Answer:

The answer is below

Step-by-step explanation:

The growth of the bacteria is in the form of an exponential growth. It is given by the formula:

$P(t)=ae^{rt}\\\\where\ t\ is\ the\ number\ of \ hours, P(t)\ is\ the \ population\ at\ t\ hours\\\and\ a=population\ at\ start$

At 2 hours, the population is 62 cells, hence:

$P(2)=ae^{2r}\\\\62=ae^{2r}\ \ .\ \ .\ \ .\ (1)$

After another 2 hours (4 hours), the population is 1 million:

$P(4)=ae^{4r}\\\\1000000=ae^{4r}\ \ .\ \ .\ \ .\ (2)\\\\Divide \ equation\ 2\ by\ equation\ 1:\\\\\frac{1000000}{62}=\frac{ae^{4r}}{ae^{2r}} \\\\16129=e^{2r}\\\\ln(e^{2r})=ln(16129)\\\\2r=9.688\\\\r=4.844$

Put r = 4.844 in equation 1

$62=ae^{2*4.844}\\\\62=16129a\\\\a=0.003844$

$P(t)=0.003844e^{4.844t}\\\\at \ start,t=0\\\\P(0)=0.003844$

4 0

3 years ago

How do you solve 4.23-5(0.04+0.09) step by step?

gtnhenbr [62]

Answer:

-0.04

Step-by-step explanation:

4.23-5= -0.77

-0.77*0.04= -0.03

-0.77*0.09= -0.07

-0.07 + -0.03= -0.04

8 0

3 years ago

Help please, my teacher is horrible at explaning

Inessa05 [86]

10 hours and 10 minutes

6 0

3 years ago

Read 2 more answers

Write a function to represent the set of ordered pairs for {(2, 2), (3, 7), (4, 14), (5, 23)}

weeeeeb [17]

$(x, x^{2}-2)$

so, y= $x^{2} -2$ is the function

5 0

2 years ago

Read 2 more answers

Simplify the equations: -3(-2h+-3)

Alex17521 [72]

Answer:6h+9

Step-by-step explanation:

-3(-2h-3)

Open the brackets

6h+9

7 0

2 years ago