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2 years ago

Simply 3x+8/5+4x+10/5 completely

Mathematics

1 answer:

Ratling [72]2 years ago

7 0

Answer:

3x+4x+10/5+8/5

7x+10/5+8/5

7x+18/10

7x+9/5

Step-by-step explanation:

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deff fn [24]

Hello!! the answer is 3xy

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2 years ago

The sum of two numbers is 40. One number is 4 times as large as the other. What are the numbers?

Sergeu [11.5K]

Answer:

4x+x=40

5x+40

x=8

8, 32

Step-by-step explanation:

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3 years ago

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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,

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

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

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3 years ago

.75 (x +20)=2 +0.5 (x-2)

nalin [4]

Answer:

i need help too

Step-by-step explanation:

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2 years ago

A rectangle is 3 feet long by 4 feet wide

egoroff_w [7]

Answer:

20ft^2

Step-by-step explanation:

The length is currently three feet, if you add two feet to three that makes five feet. Five times four is twenty.

I hope this helps!

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2 years ago

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