Which expression is equivalent to 1/5 divided by 1/2?

The Energy Information Administration records the price of electricity in the United State each month. In July 2013, the average

saw5 [17]

Answer:

89% of the time that average price of electricity is expected to be in the interval from 5.62 cents per kw-h to 18.22 cents per kw-h

Step-by-step explanation:

Chebyshev's inequality states that:

When K = 2, 75% of the data is within two standard deviations of the mean

When K = 3, 89% of the data is within 3 standard deviations of the mean

In this problem, we have that:

Mean = 11.92 cents per kw-h

Standard deviation = 2.1 cents per kw-h

What can you determine about these data by using Chebyshev's Inequality with K=3?

3 standard deviations below the mean

11.92 - 3*2.1 = 5.62 cents per kw-h

3 standard deviations above the mean

11.92 + 3*2.1 = 18.22 cents per kw-h

So you can determine that 89% of the time that average price of electricity is expected to be in the interval from 5.62 cents per kw-h to 18.22 cents per kw-h

6 0

3 years ago

2 points

Yuki888 [10]

Answer:

210 cm2

Step-by-step explanation:

6 0

3 years ago

PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!! I NEED TO FINISH THESE QUESTIONS BEFORE MIDNIGHT TONIGHT.

sammy [17]

Answer:

The answer to your question is VW = 2.2

Step-by-step explanation:

Data

angle = 63°

hypotenuse = ?

adjacent side = 1

Process

To solve this problem use trigonometric functions, the trigonometric function that relates the adjacent side and the hypotenuse is cosine.

cos α = $\frac{adjacent side}{hypotenuse}$

solve for hypotenuse

hypotenuse = $\frac{adjacent side}{cos \alpha}$

Substitution

hypotenuse = $\frac{1}{cos 63}$

Simplification

hypotenuse = $\frac{1}{0.45}$

Result

hypotenuse = 2.2

5 0

3 years ago

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Which factorization is equivalent to this expression?

grigory [225]

Answer:

$10(3x+7)$

Step-by-step explanation:

we have the expression:

$30x + 70$

To factor this expression we need to indentify the components that are common in both terms.

At first glance there is nothing in common, but we can notice that 30 and 70 are multiples of 10, that is:

$10*3=30\\10*7=70$

so we can substitute this into the expression:

$10*3x+10*7$

and now that we have the common term (the number 10) we can factorize it, that is, take out the common term and include a parentheses:

$10(3x+7)$

8 0

2 years ago

Guys pls help meeee<br> i need help

Jobisdone [24]

Answer:

1 over 12 or 1/12

Step-by-step explanation:

there are 6 side on a dice. rolling a five is a 1 out of 6 chance and an even number is a 3 out of six chance. multiply them together to get 3 out of 36 simplify to get 1 out of 12

5 0

2 years ago

Read 2 more answers