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ycow [4]
4 years ago
15

Type the algebraic equation for this statement. Let a represent the unknown number.

Mathematics
1 answer:
soldier1979 [14.2K]4 years ago
5 0

2x - 7= 147

this is the answer

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Sherrie's biology class is studying the ability of a certain microbe to dissipate oil spilled in seawater. to be effective the p
choli [55]

The exponential equation for the growth is f(x)=57e^{0.51x} where x is the number of days and the population on 21st march is 2069983.5 of microbes.

Given:

Days                   population

0                                57

1                                 95

5                               700

10                               8525

We have to form exponential equation which shows the growth of microbes.

We know that exponential equation which shows the sum is as under:

f(x)=Pe^{rt} where r is the rate of growth and x is the number of days, months or years depending on how things grows.

In the question when x=0 population is 57.

f(0)=57

Pe^{0}=57

P=57

When x=1, population is 95.

f(1)=95

Pe^{r}=95

57 e^{r}=95

57=95/e^{r}----1

when x=5,population is 700.

f(5)=700

Pe^{5r}=700

57e^{5r}=700

57=700/e^{5r}-----2

Equating 1&2

95/e^{r}=700/e^{5r}

e^{5x} /e^{x} =700/95

e^{5r-r}=7.36

e^{4r}=7.36

(2.7182)^{4r}=(2.7182)^{2}

equating both sides

4r=2

r=0.5

put the value of t=21 in the exponential equation

f(21)=57e^{0.5*21}

=57e^{10.5}

=57*36315.5

=2069983.5

Hence the population on 21st march is 2069983.5.

Learn more about equation at brainly.com/question/2972832

#SPJ4

8 0
2 years ago
What do I do to start this problem.<br>for #4
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Well there is 1 girl for every 5 boys so you could add 1 + 5 to get 6, and divide the total students by 6 to get 38 girls.
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3 years ago
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