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arlik [135]
3 years ago
10

Which of the following systems of linear equations has no solution?

Mathematics
2 answers:
yanalaym [24]3 years ago
8 0
None of the above!!!!!!
Minchanka [31]3 years ago
7 0
None of the above is the right answer !
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Calculate the variance and the standard deviation of the data below 23. 19, 22, 30, 28
Alina [70]

To get the variance, start with finding the mean of your data points:

(23 + 19 + 22 + 30 + 28) / 5 = 24.4

Now take each data point and subtract the mean from it, then square that value:

23 - 24.4 = -1.4 * -1.4 = 1.96

19 - 24.4 = -5.4 * -5.4 = 29.16

22 - 24.4 = -2.4 * -2.4 = 5.76

30 - 24.4 = 5.6 * 5.6 = 31.36

28 - 24.4 = 3.6 * 3.6 = 12.96

Now get the average of those new numbers. That is your variance:

(1.96 + 29.16 + 5.76 + 31.36 + 12.96) / 5 = 16.24

The standard deviation will be the square root of the variance:

√(16.24) = 4.0299 (rounded to 4DP)

7 0
2 years ago
X/10=6/15 what is x?
Ivahew [28]

Answer:

Step-by-step explanation:

\frac{x}{10} = \frac{6}{15}

Cross-multiplying will give us the following:

15x = 60

Dividing both sides by 15 will give us our answer:

x = 4

5 0
3 years ago
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Cost of wood is $9.50. How much would it cost Matt to buy 2 1/2 metres?
gtnhenbr [62]

Answer:

23.75

Step-by-step explanation:

how this helped bye I would appreciated if u liked my comment tho

5 0
3 years ago
Left model : 1 cm = 6 in
Rama09 [41]

Answer:

Can you give us a picture?

5 0
2 years ago
If a rectangular. Prism. Has 5cm. 10cm on one side and 4cm on the. Other. What is the volume of the rectangle?
emmasim [6.3K]

Answer: 200\ cm^3

Step-by-step explanation:

Given

The dimension of the rectangular prism is

l=5\ cm\\w=10\ cm\\h=4\ cm

The volume of the prism is given by V=l\times w\times h

\Rightarrow V=5\times 10\times 4\\\Rightarrow V=200\ cm^3

Therefore, the volume of the prism is 200\ cm^3.

7 0
2 years ago
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