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lisov135 [29]
1 year ago
13

If your current examination mean is 97.2 and you receive a 99 on the next examination, what effect will this have?

Mathematics
2 answers:
Sonbull [250]1 year ago
6 0

If your current examination mean is 97.2 and you receive a 99 on the next examination, the mean will increases.

Mean: It is the sum (total) of all the values in a set of data, such as numbers or measurements, divided by the number of values on the list. To find the mean, add up all the values in the set. Then divide the sum by how many values there are.

We have the current examination mean, x_o_l_d = 97.2

Now, we receive, x = 99 on the next examination, the new mean will be:

x_n_e_w = \frac{x_o_l_d + x}{N}                                                                ∴ N= 2

x_n_e_w = \frac{97.2 + 99}{2}

x_n_e_w = \frac{196.2}{2}

x_n_e_w = 98.1

∴ New mean, x_n_e_w = 98.1

98.1 > 97.2

Hence, mean is increased on receiving a 99 on the next examination.

For more information on this topic, visit:

brainly.com/question/1136789

#SPJ4

mr Goodwill [35]1 year ago
3 0

If you have an average of 97.2 on your current exam and you get a 99 on your next exam, your average will increase.

  • Mean in mathematics is the sum (total) of all the values in a set of data, such as numbers or measurements, divided by the total number of values.

  • To find the average, sum all the values ​​in the set. Then divide the total by the number of values.

We have the current examination mean, xold = 97.2

Now, we receive,  x = 99 on the next examination, the new mean will be:

xnew = (xold + x)/N

xnew = (97.2+99)/2

xnew = 196.2/2

xnew = 98.1  

The new average is 98.1

98.1 > 97.2

So if you score 99 on your next exam, your average will increase.

Learn more about mean here

brainly.com/question/1136789

#SPJ4

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I’ll give points + brainalist
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2 years ago
A colony of bacteria is grown under ideal conditions in a laboratory so that the population increases exponentially with time. A
Naddik [55]

Answer:

Initial bacterias = 6006000

Altought I believe is safe to assume that the values were 192,000 and 384,000 instead of 192,192,000 and 384,384,000, in that case the initial bacterias is 6000

Step-by-step explanation:

A exponential growth follows this formula:

Bacterias  = C*rⁿ

C the initial amount

r the growth rate

n the number of time intervals

Bacterias (55 hours) = 192,192,000

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Bacterias(55hours)=C*r^{{\frac{55-t}{t}}} \\Bacterias (66hours) = C*r^{\frac{66-t}{t}}}

If you divide both you can get the growth rate:

\frac{Bacterias (66hours)}{Bacterias(55hours)}=\frac{C*r^{\frac{66-t}{t}}}{C*r^{{\frac{55-t}{t}}}} \\\frac{384,384,000}{192,192,000} =r^{\frac{66-t}{t} -\frac{55-t}{t} } \\2 =r^{\frac{11}{t}}

So with that r = 2 and each time interval correspond to 11 years

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7 0
3 years ago
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oksian1 [2.3K]

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He will use 4.

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2 years ago
What is the volume of a cylinder with a diameter of 6m and a height of 5m?
nexus9112 [7]
Diameter=6m

radius=6/2=3m

Volume of the cylinder
=π× r^2 ×h
=π× 3^2 ×5
=π× 9×5
=45π
=141.37
=141 m^3
3 0
3 years ago
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