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kiruha [24]
3 years ago
9

Please help DUE TODAY!!!!!! 50 points!

Mathematics
2 answers:
Tom [10]3 years ago
8 0

Answer:

which part of the question you want to ask dear kindly specify.

anyway I'll let you know all of them,

8) 255/-17 = -15

9) -153÷9 = -17

10) -342/-19 = 18

11) -180÷20 = -9

12) 12×2 = 24

13) 182÷14 = 13

14) -5×4 = -20

pls give brainliest for the answer

Vlad1618 [11]3 years ago
5 0

Answer:

\frac{  255}{ - 17}  =  - 15 \\  - 153 \div 9 =  - 17 \\   \frac{ - 342}{ - 19}  = 18 \\   - 180 \div 20 =  - 90 \\ 12 \times 2 = 24  \\ 182 \div 14 = 13

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Ludmilka [50]

Answer:

Median is used to describe the center of the data of heights of 50 basketball players.

Step-by-step explanation:

The median divides the data into two equal parts.

It can be used to describe the center of the data.

The mean gives the average where most data lies.

The advantages of median are

1)it is located even when the values are not capable of quantitative measurements.

2) It is not affected by extreme values > It can be computed even when a frequency distribution  involves open end classes like those of income and prices.

3) In a highly skewed distribution median is appropriate average to use.

The disadvantages of the mean are

1) it is greatly affected by extreme values.

2) It sometimes gives fallacious conclusions.

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4 0
3 years ago
A sample of bacteria is decaying according to a half-life model. If the sample begins with 200 bacteria and after 5 minutes ther
77julia77 [94]
<h2>Hello!</h2>

The answer is:

There will remain a total of 134 bacteria after 7 minutes.

<h2>Why?</h2>

Exponential decay calculations are commonly used to find the decrease of amounts of populations, bacterias, and other situations when using proportional relationships. In order to find the problem, we must remember the equation used to calculate the exponential decay.

Decay=S(1-r)^{t}

Where,

S, is the starting value/amount

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t, is the time elapsed.

We are given that the numbers of bacteria decrease by 50 after 5 minutes, starting with 200, and after 5 minutes the number of bacteria is 150

Calculating the rate of decrease, we have:

Rate=\frac{Decrease}{Starting}=\frac{200-150}{200}=\frac{50}{200}=0.25

Therefore, the rate of decrease is 0.25 or 25% (after multiplying the number by 100)

Then, substituting the given information and the rate of decrease into the decay equation, we have:

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Now, to calculate how many bacteria will remain after 7 minutes, we need to substitute it into the decay equation:

Bacteria(After7Minutes)=200(1-0.25)^{\frac{7}{5}}=133.69

So, rounding to the nearest whole number, there will remain a total of 134 bacteria after 7 minutes.

Have a nice day!

3 0
3 years ago
I need help I would really thank wheeler answers this for me
gavmur [86]
It helps immensely if you know your times tables.

a) 36 = 6*6 = 2*3*2*3 = 2^2*3^2


b) 45 = 5*9 = 5*3*3 = 3^2*5


c) 2 is not a common factor; 3^2 is a common factor; 5 is not a common factor. The greatest common factor is 3^2 = 9.


d) The least common multiple can be found a couple of ways.

.. 1) the product of the distinct factors to their highest powers
.. .. .. 2^2 * 3^2 * 5 = 180

.. 2) the product of the numbers divided by their greatest common factor.
.. .. .. 36 * 45 / 9 = 180
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