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abruzzese [7]
2 years ago
11

Lorenzo and his family were on a road trip. His parents told him that they drove 252 miles during the first 312 hours of the tri

p. If they continued driving that pace for 5 more hours how many total miles would they have traveled so far?
Mathematics
1 answer:
Elis [28]2 years ago
7 0

Answer: 6.19 miles

Step-by-step explanation:

1): First you have to divide 312 by 252 to get the miles per hour.

312 / 252 = 1.23

2): Secondly, multiple 1.23 by 5 hours

5 x 1.23 = 6.19

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3 years ago
A market research team compiled the following discrete probability distribution, where X represents the number of automobiles ow
rodikova [14]

Answer:

The standard deviation of X is 0.7

Step-by-step explanation:

We are given the following distribution:

    x:     0        1         2       3    

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We have to find the standard deviation of X.

Formula:

E(x) = \displaystyle\sum x_iP(x_i)\\\\E(x) =0(0.3) + 1(0.5) + 2(0.2) + 3(0.4)\\\\E(x) = 2.1\\\\E(x^2) = \displaystyle\sum x_i^2P(x_i)\\\\E(x^2) =0(0.3) + 1(0.5) + 4(0.2) + 9(0.4)\\\\E(x^2) = 4.9\\\\Var(x) = E(x^2) - (E(x))^2 = 4.9-(2.1)^2 = 0.49\\\\\sigma(x) = \sqrt{Var(x)} =\sqrt{0.49} = 0.7

Thus, the standard deviation of X is 0.7

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3 years ago
The scatter plot below shows what kind of trend?
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2 years ago
The following describes Jason's trip as he rode a bus home from college
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6 0
3 years ago
Round 6.7086 to the nearest thousandth.
Effectus [21]
Rounded to the near test thousandth: 6.709
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3 years ago
Read 2 more answers
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