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Sergeu [11.5K]
3 years ago
15

Find the slope between years 2000 and 2005. Interpret it in the context of the problem

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
6 0
The slope is -100 .......
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85.14% of the students have a cell phone.

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2x + (-x) + 3 + (-2)
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-x+3

Step-by-step explanation:

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Can anyone help me with this
Likurg_2 [28]
7/13 = about 0.54
-1 1/2 = -1.5

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-1.7, -1 1/2, 0.04, 0.1, 7/13
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Sound City sells the ClearTone-400 satellite car radio. For this radio, historical sales records over the last 100 weeks show 5
Harman [31]

Answer:

μ =2.23

\sigma_x^2= 1.49

\sigma_x=1.22

Step-by-step explanation:

Radio(x)                            weeks                           P(x)

0                                         5                                 5/100 = 0.05

1                                           27                               27/100=0.27

2                                          27                                 27/100 = 0.27

3                                         27                                 27/100 = 0.27  

4                                           9                                    9/100=0.09

5                                             5                                    5/100=0.05

We know that

Mean ,μ

\mu =\sum x.P(x)

μ = 0 x 0.05 + 1 x 0.27 + 2 x 0.27 + 3 x 0.27 + 4 x 0 .09 + 5 x 0.05

μ =2.23

\sigma_x^2= \sum x^2\times P(x)-(\sum x.P(x))^2

\sigma_x^2= 0^2\times 0.05+ 1^2\times 0.27+ 2^2\times 0.27+ 3^2\times 0.27+ 4^2\times 0.09+5^2\times 0.05-2.23^2

\sigma_x^2= 1.49

\sigma_x= \sqrt{\sigma_x^2}

\sigma_x=1.22

7 0
3 years ago
My teacher says theres 3 correct answers
Anettt [7]
All of them except the second one .
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