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lorasvet [3.4K]
3 years ago
14

An air conditioning system can circulate 400 cubic feet of air per minute. How many cubic yards of air can it circulate per minu

te?
Mathematics
1 answer:
cricket20 [7]3 years ago
3 0

Answer:

14.814 i belive

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Suppose y varies directly with x, and y = 12 when x = 2. What direct variation
neonofarm [45]

Answer:

y=24

Step-by-step explanation:

<u>Given:</u>

y=kx

<u>Substitute:</u>

\left \{ {{y=12} \atop {x=2}} \right. into y=kx

12=k\times2

<u>Swap the sides:</u>

<u />k\times2=12

<u>Divide both sides of the equation by the coefficient of variable:</u>

<u />k=\frac{12}{2}

<u>Cross out the common factor:</u>

<u />k=6

<u>Find the equation of the function:</u>

<u />y=6x

<u>Substitute:</u>

<u />y=6\times4

<u>Calculate the product or quotient:</u>

<u />y=24

4 0
2 years ago
What are the mean absolute deviation and population standard deviation of this data set? Round to the nearest tenth if necessary
tekilochka [14]

Answer:

For a data set of N elements:

{x₁, x₂, ..., xₙ}

The mean is:

M = \frac{x_1 + x_2 + ... + x_n}{N}

The mean absolute deviation is:

MAD = \frac{|x_1 - M| + ... + |x_n - M|}{N}

And the population standard deviation is:

PSD = \frac{\sqrt{|x_1 - M|^2 + ... + |x_n - M|^2} }{\sqrt{N}}

In this case, our set has 5 elements, and the set is:

{2, 4, 6, 9, 14}

The mean of this set is:

M = \frac{2 + 4 + 6 + 9 + 14}{5} = 7

The mean absolute deviation is:

MAD = \frac{|2 - 7| + |4 - 7| + |6 - 7|+ |9 - 7| + |14 - 7| }{5} = 3.6

And the population standard deviation is:

PSD =  \sqrt{\frac{|2 - 7|^2 + |4 - 7|^2 + |6 - 7|^2+ |9 - 7|^2 + |14 - 7|^2 }{5}} = 4.2

6 0
2 years ago
1/2+1/4= <br><br> 3/4+1/4=<br><br> What is the difference
son4ous [18]
1/2 + 1/4 = 3/4
3/4 + 1/4 = 1
4 0
3 years ago
Read 2 more answers
Which is greater 2/11 or 3/12
nata0808 [166]

Answer:

3/12

Step-by-step explanation:

6 0
3 years ago
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What is the answer to 2/3-4x+7/2=-9x+5/6
zzz [600]

Answer:

-2/3

hope this helped you

please mark as the brainliest (ㆁωㆁ)

4 0
3 years ago
Read 2 more answers
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