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3 years ago

8

Melanie walked her dog 2 1/5 miles. Cathy walked her dog 1 3/4 times as far as Melanie did. How many more miles did Cathy walk h

er dog?

1 answer:

Stolb23 [73]3 years ago

7 0

3 17/20 miles or 3.85 miles.

1 3/4 = 1.75, 2 1/5 = 2.2
2.2*1.75=3.85

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3 years ago

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Artemon [7]

Answer:

Keenan's z-score was of 0.61.

Rachel's z-score was of 0.81.

Step-by-step explanation:

Z-score:

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.

Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4.9 points.

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So

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

$Z = \frac{80 - 77}{4.9}$

$Z = 0.61$

Keenan's z-score was of 0.61.

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3 years ago

This is worth 20 points. If you do both questions you get brainlest!

Ugo [173]

5.78♡︎♡︎ and 2.4♡︎♡︎ it’s possible i may be wrong but i’m pretty sure i’m right!✨ ♡︎Brainliest please!♡︎ Good luck with your test or homework hope this helped♡︎♡︎

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3 years ago

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timurjin [86]

Answer:

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3 years ago