A hiker walks at a speed of 3 2 5 kilometers per hour. How many kilometers will the hiker walk-in

Mathematics

2 answers:

denis-greek [22]3 years ago

4 0

Answer:

18.75km

Step-by-step explanation:

All you have to do is multiply the average speed times the time, in this case 5 hours. So it will look like this: 3 3/4x5.

Solve that, and you get 18.75 km. (in decimal form)

Hope that helps! Have a great day.

Leto [7]3 years ago

3 0

Answer:

65 km

Step-by-step explanation:

was that 325 km? if so it would be 325 x 5 = 65

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3 years ago

The distribution of income tax refunds follow an approximate normal distribution with a mean of $7010 and a standard deviation o

Andrej [43]

Answer:

A refund must be above $7,139 before it is audited.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 7010, standard deviation = 43.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

The empirical rule is symmetric, which means that the lowest (100-99.7)/2 = 0.15% is at least 3 standard deviations below the mean, and the upper 0.15% is at least 3 standard deviations above the mean.

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3 standard deviations above the mean, so:

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5 0

3 years ago

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JulsSmile [24]

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