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masya89 [10]
3 years ago
15

A population of insects doubles every month. this particular population started out with 20 insects

Mathematics
1 answer:
Minchanka [31]3 years ago
8 0
<span>Start with 20
After 1 month, 20 * 2 = 20 * 2^1
After 2 months, (20 * 2) * 2 = 20 * 2^2
 After 3 months, (20 * 2^2) * 2 = 20 * 2^3
After x months: 20 * 2^x
</span>
2x+20, x being a month<span>

</span>
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The value of a ratio is __________.
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Answer:

B.

Step-by-step explanation: The value of a ratio is the quotient of the two quantities in the ratio.

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∠Q and ∠R are complementary. If m∠Q = 33.8°, what is m∠R ? m∠R = 146.2° m∠R = 33.8° m∠R = 123.8° m∠R = 56.2°
Brrunno [24]

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5 0
2 years ago
A student wants to report on the number of movies her friends watch each week. The collected data are below: 2 14 1 2 0 1 0 2 Wh
Sunny_sXe [5.5K]

The student's friend watch 1.5 movies every week.

Data provided to us {2, 14, 1, 2, 0, 1, 0, 2}.

Number of data values = 8

Sorted or rearranged data {0, 0, 1, 1, 2, 2, 2, 14}

Median of the data provided;

Median is the mid point value of the data provided to us, but as in this case there are 8 data provided (even number of data), we will take the average of the 2 mid values of the data.

Mid Values = 1 and 2

\bold{Median=\dfrac{1+2}{2} = 1.5}

Mean of the data provided;

Mean=\dfrac{Sum\ of\ all\ data\ values}{Number\ of\ data\ values} \\\\Mean= \dfrac{(0+0+1+1+2+2+2+14)}{8}\\\\Mean=2.75

As we know, The data values provided are 0, 1 and 2, and there is 14 as well in the data which is the maximum value in the data provided to us but the value is far from the other data values provided to us. Therefore, the data value 14 is considered to be an outlier.

An outlier is the maximum value that increases the mean, which makes it larger than it should be.

If we were to compute the mean without the outlier,

Mean=\dfrac{Sum\ of\ all\ data\ values}{Number\ of\ data\ values} \\\\Mean= \dfrac{(0+0+1+1+2+2+2)}{7}\\\\Mean=1.1428

Now, we have understood that the mean is sensitive to outlier can be easily manipulated. thus, mean is not the right option to go for in this case.

Therefore, the median value of 1.5 is the right option.

Hence, the student's friend watch 1.5 movies every week.

To know more visit:

brainly.com/question/1363341

3 0
2 years ago
Read 2 more answers
Lisa collected leaves from different trees for a science project. Every day for a week (7 days), she collected 7 leaves. How man
Veseljchak [2.6K]
7x7 she have 49 leaves by the weekend :-P
4 0
3 years ago
Read 2 more answers
2x-√x(1-2x) =1<br> x+√4-x² =2
snow_lady [41]

Answer:

or, 2x-x^2+2x^2=1

or,2x+x^2=1

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or,x^2+x+x-1=0

or,x(x+1)+1(x-1)=0

or,(x+1)(x-1)=0

therefore x=(-1,+1)

7 0
3 years ago
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