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3 years ago

Allen runs 8 miles in 3 hour, how long does it take him to run 3 miles

Mathematics

2 answers:

Dominik [7]3 years ago

7 0

Answer:

divide 8 miles by 3 hours to find how many miles he runs in 1 hour:

8 /3 = 2 2/3 miles in one hour.

Now divide 3 miles by 2 2/3 miles per hour:

3 / 2 2/3 = 1 1/8 hours (1 hour 7.5 minutes) to run 3 miles.

umka21 [38]3 years ago

7 0

Answer:

1 1/8 hours = time

Step-by-step explanation:

To find the rate, we take the distance and divide by the time

8/3 = 8/3 miles per hour

We know that distance = rate * time

We need to find time

distance/ rate = time

3 miles/ 8/3 miles per hour = time

Copy dot flip

3 * 3/8 = time

9/8 hours = time

1 1/8 hours = time

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What is the graph of the function <br> f(x)=−⌊x⌋

kupik [55]

Answer:

Step-by-step explanation:

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3 years ago

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riadik2000 [5.3K]

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3 years ago

Jackson Middle School has 6 students in choir for every 1 student in band. If there are 52 students in band, how many students a

posledela

Answer:

There are 312 students in choir

Step-by-step explanation:

If there are 52 students in band and for every 1 student in the band, 6 are in choir

Therefore, 52 × 6 = 312

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3 years ago

Read 2 more answers

the time taken by a student to the university has been shown to be normally distributed with mean of 16 minutes and standard dev

Naya [18.7K]

Answer:

a) 2.84% probability that he is late for his first lecture.

b) 5.112 days

Step-by-step explanation:

When the distribution is normal, we use 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.

In this question, we have that:

$\mu = 16, \sigma = 2.1$

a. Find the probability that he is late for his first lecture.

This is the probability that he takes more than 20 minutes to walk, which is 1 subtracted by the pvalue of Z when X = 20. So

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

$Z = \frac{20 - 16}{2.1}$

$Z = 1.905$

$Z = 1.905$ has a pvalue of 0.9716

1 - 0.9716 = 0.0284

2.84% probability that he is late for his first lecture.

b. Find the number of days per year he is likely to be late for his first lecture.

Each day, 2.84% probability that he is late for his first lecture.

Out of 180

0.0284*180 = 5.112 days

4 0

3 years ago

Find the area of the figure

crimeas [40]

Try this way:
S=S₁-S₂, where S - area of the figure, S₁ - area of the triangle, S₂ - area of the quadrangle.
S=0.5*(5+2)*(5+4)-2*4=31.5-8=23.5 in.²

Answer: 23.5 in.²

8 0

3 years ago

Allen runs 8 miles in 3 hour, how long does it take him to run 3 miles​

Allen runs 8 miles in 3 hour, how long does it take him to run 3 miles