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Leona [35]
3 years ago
14

Number 18??? I need help

Mathematics
2 answers:
Anna [14]3 years ago
7 0

Answer:

3.86 Miles

Step-by-step explanation:

  • 2 Miles ran.
  • 220 Calories burned.

1 Mile = 110 Calories

110 × 3.86 = 424.6 Calories

424.6 rounds to 425 Calories

Hope this helps.

#FORTHEPUPPIES

Anna [14]3 years ago
6 0
I think it’s 4 miles as you divide 220 by 2 to get the amount of calories burned in one mile which is 110 and then to burn 425 you would need about 4 miles
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Step-by-step explanation:

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Margret need to get 4 boxes of cookies.

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The distribution of IQ scores can be modeled by a normal distribution with mean 100 and standard deviation 15.
evablogger [386]

Answer:

4.4% of the population with IQ between 120 and 125.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100

Standard Deviation, σ = 15

We are given that the distribution of IQ scores is a bell shaped distribution that is a normal distribution.

a) Let X be a person's IQ score.

Then, density functions for IQ scores is given by:

P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{z^2}{2}}\\\\\text{where,}\\\\z = \frac{x-\mu}{\sigma}\\\\P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}\\\\P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{(x-100)^2}{450}}

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z_{score} = \displaystyle\frac{x-\mu}{\sigma}

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P(120 \leq x \leq 125) = 4.4\%

6 0
3 years ago
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