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3 years ago

Find the value of 4x + 3y when x = 13 and y=9

Mathematics

2 answers:

Ilia_Sergeevich [38]3 years ago

8 0

Answer:

Step-by-step explanation:

The equation would now be 4(13) + 3(9). This can be simplified to 52 + 27. Solving this, you get 79.

Hope it helps!

Talja [164]3 years ago

5 0

Answer:

Step-by-step explanation:

4(13)+3(9)

52+27

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A random sample of 10 shipments of stick-on labels showed the following order sizes.10,520 56,910 52,454 17,902 25,914 56,607 21

sammy [17]

Answer:

Confidence Interval: (21596,46428)

Step-by-step explanation:

We are given the following data set:

10520, 56910, 52454, 17902, 25914, 56607, 21861, 25039, 25983, 46929

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{340119}{10} = 34011.9$

Sum of squares of differences = 551869365.6 + 524322983.6 + 340111052.4 + 259528878 + 65575984.41 + 510538544 + 147644370.8 + 80512934.41 + 64463235.21 + 166851472.4 = 2711418821

$S.D = \sqrt{\frac{2711418821}{9}} = 17357.09$

Confidence interval:

$\mu \pm t_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 9 and}~\alpha_{0.05} = \pm 2.2621$

$34011.9 \pm 2.2621(\frac{17357.09}{\sqrt{10}} ) = 34011.9 \pm 12416.20 = (21595.7,46428.1) \approx (21596,46428)$

7 0

3 years ago

Which sample had the least percent error?

vaieri [72.5K]

Answer:

<h3>Sample 4</h3>

Step-by-step explanation:

When there is a large number with 0.1 away from Actual, it is closer than to 20, 32, or 36.

This is the best way I can explain it.

Best of Luck to you.

If you have questions, please feel free to comment below.

Thank You!

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3 years ago

When CPI data is collected, what does the index value represent?

gladu [14]

Answer:

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Step-by-step explanation:

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2 years ago

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dezoksy [38]

Answer:

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Step-by-step explanation:

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