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solniwko [45]
3 years ago
14

Find the area of a rectangle that is 5.8 cm long and 1.2 cm wide

Mathematics
2 answers:
Svetlanka [38]3 years ago
5 0
<h2><em>6.96cm^2.</em></h2><h2><em>5.8 x 1.2 = 6.96cm^2.</em></h2>
Paraphin [41]3 years ago
3 0

Answer:

6.96

Step-by-step explanation:

I multiplied 5.8 cm by 1.2 cm which gave me 6.96

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Mr. Anderson wrote (7x9) 103 on the board. What is the value of that expression
RUDIKE [14]

Answer:

6,489

Step-by-step explanation:

first you would multiply 7 and 9, which would be 63

7 x 9 = 63

then you would multiply 63 by 103 since they are being multiplied

63 x 103 = 6,489


8 0
3 years ago
A consumer group has determined that the distribution of life spans for gas ranges (stoves) has a mean of 15.0 years and a stand
Art [367]

Answer:

b. Mean = 1.6 years, standard deviation - 0.92 years, shape: approximately Normal.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Subtraction of normal Variables:

When we subtract normal variables, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.

A consumer group has determined that the distribution of life spans for gas ranges (stoves) has a mean of 15.0 years and a standard deviation of 4.2 years. Sample of 35:

This means that:

\mu_G = 15

s_G = \frac{4.2}{\sqrt{35}} = 0.71

The distribution of life spans for electric ranges has a mean of 13.4 years and a standard deviation of 3.7 years. Sample of 40:

This means that:

\mu_E = 13.4

s_E = \frac{3.7}{\sqrt{40}} = 0.585

Which of the following best describes the sampling distribution of the difference in mean life span of gas ranges and electric ranges?

Shape is approximately normal.

Mean:

\mu = \mu_G - \mu_E = 15 - 13.4 = 1.6

Standard deviation:

s = \sqrt{s_G^2+s_E^2} = \sqrt{0.71^2+0.585^2} = 0.92

So the correct answer is given by option b.

8 0
3 years ago
Given the polygon containing Point P.
Fynjy0 [20]
I think it is B. (-4, 4)
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2 years ago
The box plot represents the amount of time 15 pet owners spend exercising their pets each day.
Blizzard [7]
Right around 75 I would believe
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3 years ago
Helppppppp please this is very difficult for me
natima [27]
The 3rd option okkkkkkkk?
5 0
3 years ago
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