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3 years ago

Write a verbal description of the set {a, i, e, o, u}

Mathematics

2 answers:

tamaranim1 [39]3 years ago

3 0

The set contains only vowels

marissa [1.9K]3 years ago

3 0

Answer:

vowels..? I don't understand the question aha

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Assume that trees are subjected to different levels of carbon dioxide atmosphere with 7% of the trees in a minimal growth condit

taurus [48]

Answer: The mean and standard deviation are 567.2 and 89.88 resp.

Step-by-step explanation:

Since we have given that

For 370 parts per million = 7% = 0.07

For 440 parts per million = 10% = 0.10

For 550 parts per million = 49% = 0.49

For 670 parts per million = 34% = 0.34

So, Mean of the carbon dioxide atmosphere for these trees would be

$E[x]=370\times 0.07+440\times 0.1+550\times 0.49+670\times 0.34=567.2$

And

$E[x^2]=370^2\times 0.07+440^2\times 0.1+550^2\times 0.49+670^2\times 0.34=329794$

So, Variance would be

$Var\ x=E[x^2]-E[x]^2=329794-567.2^2=8078.16$

So, the standard deviation would be

$\sigma=\sqrt{8078.16}=89.88$

Hence, the mean and standard deviation are 567.2 and 89.88 resp.

3 0

3 years ago

Rearrange y =1/2x+1to make x the subject.

ella [17]

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$y = \frac{1}{2} x + 1 \\$

Multiply sides by 2

$2 \times y = 2 \times ( \frac{1}{2} x + 1) \\$

$2y =( 2 \times \frac{1}{2} x) + (2 \times 1) \\$

$2y = x + 2$

$x + 2 = 2y$

Subtract sides 2

$x + 2 - 2 = 2y - 2$

$x = 2y - 2$

Done...

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2 years ago

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12 to the 3rd power divided by 12 to the 7th power

Molodets [167]

Answer:

0.000048..............

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2 years ago

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Mental Math

Dimas [21]

Answer:

288 I think

Step-by-step explanation:

24 hours each month. Each year has 12 months so 24x12=288

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3 years ago

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In a herd of cattle, the ratio of the number

Neko [114]

Answer:

In a herd no. of Cattle are: x

The ratio of bulls to cows is 1:6

\frac{bulls}{cows} = \frac{1}{6}

6 bulls = 1 cows

bulls \: + cows = x

bulls + 6 \: bulls \: = x

7bulls = x

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3 years ago