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schepotkina [342]
3 years ago
14

Sonya randomly surveys 26 seventh graders to gather data about the amount of time spent each week using the Internet. Sonya reco

rds the data in the dot plot shown. What is the median of the data set?
What is the mean and the median
Mathematics
1 answer:
Naddik [55]3 years ago
4 0

Answer:

You're lucky I have the dot plot, other wise this could not be answered.

Median: 7.5

Mean: 7.5

Yes, they are both 7.5.

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user100 [1]

Answer:

a) x = k \times \frac{1}{y^2} \ , \ where \ k \ is \ a \ constant\\\\b) x = 3, \ when\  y\  =\  10\\\\c) y = 10, \ when \ x = 3

Step-by-step explanation:

a)

x \ \alpha  \ \frac{1}{y^2}\\\\x = k \times \frac{1}{y^2}\\\\                [ \ where \ k \ is \ a \ constant \ ]

<em><u>Find k.</u></em>

Given x = 12, y = 5,

12 = k \times \frac{1}{5^2}\\\\k = 12 \times 25 = 300

b)

<em><u>Find x.</u></em>

Given y = 10

We have k = 300

x = k \times \frac{1}{y^2}\\x = 300 \times \frac{1}{10^2} \\\\x= \frac{300}{100} = 3

c)

<u><em>Find y</em></u>

Given x = 3

We have k = 300

x = k \times \frac{1}{y^2}\\\\3 = 300 \times \frac{1}{y^2}\\\\\frac{1}{y^2} = \frac{3}{300}\\\\\frac{1}{y^2} = \frac{1}{100}\\\\y^2 = 100\\\\y = \sqrt{100}  = 10

8 0
3 years ago
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