You run 1 3/4 miles each day. Your friend runs 4times as far as you do. How far does your friend run each day

Mathematics

2 answers:

Inga [223]3 years ago

7 0

Just make 1 3/4 an improper fraction and multiply by 4:

1 3/4 = 7/4

7/4 * 4 = 7

Arte-miy333 [17]3 years ago

3 0

Your run runs 4 times as far:

$4 \times 1\dfrac{3}{4}$

$= 4 \times \dfrac{7}{4}$

$= 7 \text { miles}$

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Answer: Your friend runs 7 miles.
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Sindrei [870]

Answer:

22.29% probability that both of them scored above a 1520

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

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

$Z = \frac{1520 - 1497}{322}$