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bixtya [17]
3 years ago
7

Is 8.23 a rational number?

Mathematics
2 answers:
aalyn [17]3 years ago
5 0
Yes, it is a rational number because 8.23 can be expressed as a fraction.
Leni [432]3 years ago
3 0
Yes, 8.23 is a rational number since it is able to be written as a fraction (any rational number is able to be written as a fraction with an integer numerator and denominator); 8 23/100
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4. Describe the number set(s) the number belongs to: −√17
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Hey! Hope that I can help.

-√17 belongs in only one number set: irrational.
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3 years ago
What is 0.973.. as a fraction
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A graph is constructed such that time (in seconds) is the X-variable and distance (in miles) is the Y-variable. If you plot the
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3 years ago
Lengths of full-term babies in the US are Normally distributed with a mean length of 20.5 inches and a standard deviation of 0.9
mash [69]

Answer:

66.48% of full-term babies are between 19 and 21 inches long at birth

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean length of 20.5 inches and a standard deviation of 0.90 inches.

This means that \mu = 20.5, \sigma = 0.9

What percentage of full-term babies are between 19 and 21 inches long at birth?

The proportion is the p-value of Z when X = 21 subtracted by the p-value of Z when X = 19. Then

X = 21

Z = \frac{X - \mu}{\sigma}

Z = \frac{21 - 20.5}{0.9}

Z = 0.56

Z = 0.56 has a p-value of 0.7123

X = 19

Z = \frac{X - \mu}{\sigma}

Z = \frac{19 - 20.5}{0.9}

Z = -1.67

Z = -1.67 has a p-value of 0.0475

0.7123 - 0.0475 = 0.6648

0.6648*100% = 66.48%

66.48% of full-term babies are between 19 and 21 inches long at birth

5 0
2 years ago
Lamar plans to watch 2 movies each month.write an equation represent the total number of movies n that he will watch I m moths
grandymaker [24]

Answer:

n=2m

Step by step:

total=rate of movie watching per month times months

n=2 movies per month times 'm' months, so,

n=2m

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3 years ago
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