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zmey [24]
3 years ago
13

A shipping carrier charges $5 per pound, plus a $3 signature fee.

Mathematics
2 answers:
tekilochka [14]3 years ago
6 0

Answer:

y = 5x + 3

Step-by-step explanation:

Katen [24]3 years ago
6 0

Answer:

Total fee for a pound is $5 + 3.

Equation: y = 5x + 3

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Which statement is best supported by the information in the box plots?
solmaris [256]

Answer:

B is the correct

Step-by-step explanation:

choose as brinliest

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3 years ago
Please help me with this question.​
Sav [38]

Answer:

-2; -7

Step-by-step explanation:

Hello, the graph is split in two lines, right?

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*** This is the meaning of x tending to

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7 0
3 years ago
2. In your own words, explain HOW to find the standard deviation of this data set. (20 points) 3. What does the standard deviati
Ket [755]

Answer:

\sigma = 11.28 --- Standard deviation

Step-by-step explanation:

Given

See attachment for graph

Solving (a): Explain how the standard deviation is calculated.

<u>Start by calculating the mean</u>

To do this, we divide the sum of the products of grade and number of students by the total number of students;

i.e.

\bar x = \frac{\sum fx}{\sum f}

So, we have:

\bar x = \frac{50 * 1 + 57 * 2 + 60 * 4 + 65 * 3 +72 *3 + 75 * 12 + 77 * 10 + 81 * 6 + 83 * 6 + 88 * 9 + 90 * 12 + 92 * 12 +95 * 2 + 99 * 4 + 100 * 5}{1 + 2 + 4 + 3 +3 + 12 + 10 + 6 + 6 + 9 + 12 + 12 +2 + 4 + 5}

\bar x = \frac{7531}{91}

\bar x = 82.76

Next, calculate the variance using the following formula:

\sigma^2 = \frac{\sum f(x - \bar x)^2}{\sum f}

i.e subtract the mean from each dataset; take the squares; add up the squares; then divide the sum by the number of dataset

So, we have:

\sigma^2 = \frac{1 * (50 - 82.76)^2 +...................+ 5 * (100 - 82.76)^2}{91}

\sigma^2 = \frac{11580.6816}{91}

\sigma^2 = 127.26

Lastly, take the square root of the variance to get the standard deviation

\sigma = \sqrt{\sigma^2}

\sigma = \sqrt{127.26}

\sigma = 11.28 --- approximated

<em>Hence, the standard deviation is approximately 11.28</em>

Considering the calculated mean (i.e. 82.76), the standard deviation (i.e. 11.28) is small and this means that the grade of the students are close to the average grade.

8 0
2 years ago
Add the Following Fractions:
Sergio039 [100]

Answer: C, 3/4 And it's decimal form is 0.75

Step-by-step explanation:

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2 years ago
Which expression is equivalent to |b| &gt; 2?
frozen [14]

Answer:

1. b < -2 or b > 2

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|b| > 2

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4 0
3 years ago
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