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3 years ago

Darren kept track of the number of e-mails he received from one of his customers each day for 14 days on the dot plot.

Mathematics

2 answers:

liraira [26]3 years ago

8 0

A) The data is skewed left and shows that on half of the days, Darren received 11 or 12 e-mails from the customer.

hoa [83]3 years ago

6 0

Answer: The answer is (A) The data is skewed left and shows that on half of the days, Darren received 11 or 12 e-mails from the customer.

Step-by-step explanation: Given that Darren kept track of the number of e-mails he received from one of his customers each day for 14 days on the dot plot.

We are to select the correct statement out of the given options about the dot plot.

Since the dot plot has a long tail on the left side of the plot, so the data will be skewed left. Also, for 7 days that is half of 14 days, the number of e-mails received by Darren were 11 or 12.

Thus, the correct option is (A).

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A sequence of numbers begins with 12 and progresses

Gnom [1K]

Answer:

The common ratio is the current number divided by the previous. So the ratio is 1/2

Step-by-step explanation:

You can obtain any number multiplying the previous number times 1/2.

6 = 12 *(1/2)

3 = 6*(1/2)

3/2 = 3*(1/2)

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2 years ago

Read 2 more answers

Write a pair of integers whose difference gives. (a) a negative integer. (b) zero. (c) an integer smaller than both the integer.

chubhunter [2.5K]

Answer:

(a)5 and 8

(b)5 and 5

(d)6 and 2

(e)6 and -2

Step-by-step explanation:

(a)a negative integer

We consider the integers 5 and 8

Difference = 5-8 =-3

3 is a negative integer.

(b)Zero

We consider the integers 5 and 5

Difference = 5-5 =0

We consider the integers 7 and 5

Difference = 7-5 =2

2 is smaller than both integers.

(d) an integer smaller than only one of the integers.

We consider the integers 6 and 2

Difference =6-2=4

4 is smaller than only 6.

(e)an integer greater than both the integers

We consider the integers 6 and -2

Difference =6-(-2)=6+2=8

8 is greater than both 6 and -2.

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3 years ago

On a piece of paper, draw a box plot to represent the data below. Then

777dan777 [17]

Since they are already in order you know the 22 and the 61 are the upper and lower extremes. To find the median you find the number that is in the middle which is 42. To find the lower quartile find the middle number starting from the first number and the number to the left of the median (22 and 36 in this case). The loser quartile is 25. To find the upper quartile, fine the middle number between the number to the right of the median and the last number (44 and 61 in this case.) the upper quartile is 57 you then just plot it and graph it

The work is attached

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3 years ago

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vichka [17]

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3 years ago

Find a quadratic polynomial with integer coefficients which has x = 2/9, ± SQRT23/9 as its real zeros.

melomori [17]

Answer:

The quadratic polynomial with integer coefficients is $y = 81\cdot x^{2}-36\cdot x -19$ .

Step-by-step explanation:

Statement is incorrectly written. Correct form is described below:

Find a quadratic polynomial with integer coefficients which has the following real zeros: $x = \frac{2}{9}\pm \frac{\sqrt{23}}{9}$ .

Let be $r_{1} = \frac{2}{9}+\frac{\sqrt{23}}{9}$ and $r_{2} = \frac{2}{9}-\frac{\sqrt{23}}{9}$ roots of the quadratic function. By Algebra we know that:

$y = (x-r_{1})\cdot (x-r_{2}) = x^{2}-(r_{1}+r_{2})\cdot x +r_{1}\cdot r_{2}$ (1)

Then, the quadratic polynomial is:

$y = x^{2}-\frac{4}{9}\cdot x -\frac{19}{81}$

$y = 81\cdot x^{2}-36\cdot x -19$

The quadratic polynomial with integer coefficients is $y = 81\cdot x^{2}-36\cdot x -19$ .

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2 years ago