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Olenka [21]
3 years ago
10

you ride your bike around the neighborhood block eight times a day after school. The distance around the neighborhood block is 3

980 feet. How many miles do you ride on your bike during a normal school week?
Mathematics
1 answer:
LiRa [457]3 years ago
3 0
8(3980)(5) = 159200
1 mile = 5280 ft
30.15 miles per week
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An important problem encountered by personnel directors and others faced with the selection of the best in a finite set of eleme
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Answer:

1.63% probability that the 10 selected include include all the best 5 engineers in the group of 20

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the engineers are selected is not important, so the combinations formula is used to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Desired outcomes:

10 engineers selected from a set of 20.

5 best, from a set of 5.

Other 5, from a set of 20-5 = 15.

D = C_{5,5}*C_{15,5} = \frac{5!}{5!(5-5)!}*\frac{15!}{5!(15-5)!} = 3003

Totao outcomes:

10 engineers selected from a set of 20.

T = C_{20,10} = \frac{20!}{10!(20-10)!} = 184756

Probability:

p = \frac{D}{T} = \frac{3003}{184756} = 0.0163

1.63% probability that the 10 selected include include all the best 5 engineers in the group of 20

5 0
3 years ago
Identify the type of data​ (qualitative/quantitative) and the level of measurement for the data described below. Explain your ch
ella [17]

Answer:

Option A) Quantitative, because numerical values, found by either measuring or counting, are used to describe the data

Option C) Ratio, because the differences in the data can be meaningfully measured, and the data have a true zero point.

Step-by-step explanation:

We are given the following in the question:

"The average monthly rainfall in inches for a certain city throughout the year"

Qualitative or​ quantitative:

  • Quantitative data are measures of values or counts and are expressed as numbers.
  • Qualitative data are measures of 'types' and may be represented by a name, symbol, or a number code. They are non-parametric values.

Thus, the given quantitative data is quantitative because rainfall is always measured and the output is expressed in numerical values.

Option A) Quantitative, because numerical values, found by either measuring or counting, are used to describe the data

Level of measurement:

  • Ordinal: These are the qualitative variable whose order plays an important role.
  • Interval: When true zero does not exist. The negative values of such variables make sense.
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Since,for the given data true zero exist and a negative values make no sense, thus its is ratio.

Option C) Ratio, because the differences in the data can be meaningfully measured, and the data have a true zero point.

3 0
3 years ago
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Tommy bought 30 gallons of gas for 60.50. How much would 12 gallons of gas cost?
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Answer:

24.2

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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8:00 + 19 minutes = 8:19

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