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Orlov [11]
3 years ago
15

Please help me asap!!! It's an emergency!!!!!!!

Mathematics
1 answer:
hammer [34]3 years ago
6 0
To solve this question, simply find the percent of loaves of bread to total items, by taking the first loaves of bread and dividing it by the total bakery items. In this case would be, 15 loaves/25 • 100% = 60 %. Do the same calculation for the second loaves of bread. 25 loaves/37 • 100% = 67.567 %.

Now take the difference between the 2 percentages to find the percent increase of loaves of bread, which would be 7.567 %, about 7.6%. Or as a whole number 8%.

The percent increase of the loaves of bread has been 8%.
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Danielle put 4.902 gallons of gasoline in a gas tank. What is 4.902 written in expanded form?
QveST [7]

Answer:

a

Step-by-step explanation:

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2 years ago
What is 54 3/11 as a decimal
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The answer is 54.27. Hope I was halpful 
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2 years ago
What are two other names for ray CD?
Masja [62]
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6 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
(2x-1) (3x+5) -(2x-1) (x+4)
Veseljchak [2.6K]

Answer:

4x^2−1

Step-by-step explanation:

8 0
2 years ago
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