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Aleonysh [2.5K]
2 years ago
14

Frank left his house at 7 a.m. and drove to the airport at

Mathematics
2 answers:
lubasha [3.4K]2 years ago
8 0

Answer:

10 AM

Step-by-step explanation:

Frank drove at a speed of 50 mph, and traveled a distance of 150 miles.  This means he traveled for 150/50 = 3 hours. 7 AM + 3 hours = 10 AM

Andre45 [30]2 years ago
6 0

Answer:

10 am

Step-by-step explanation:

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B

Step-by-step explanation:

I'm not that smart, but. I have a gut feeling this is right.

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3 years ago
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A follow-up study will be conducted with a sample of 20 people from the 300 people who responded yes (support) and no (do not su
mafiozo [28]

Answer:

x = 20 * s / 300

Step-by-step explanation:

In this case, it is solved by means of a rule of three, that is, we know that 20 of 300 answered yes, but in the case of the strata sample, since it is a value that is not mentioned in the problem, we will assume it as " s "and the people who were selected as" x ". would:

20 x

300 s

Therefore, x:

x = 20 * s / 300

and thus they would give us the number of people that would be selected.

For example, if "s" were 240, it would be:

x = 20 * 240/300

x = 16

that is, 16 people would be selected

6 0
3 years ago
Ethan and Chloe shared £50 in the ratio 1:4
Alexxx [7]

Answer:

10:40

Step-by-step explanation:

5 0
3 years ago
Listed below are amounts​ (in millions of​ dollars) collected from parking meters by a security service company and other compan
Vikentia [17]

Answer:

CV=\frac{0.1252}{1.57}=0.07975

CV=\frac{0.1317}{1.72}=0.07657

The relative variability is almost equal in both samples a slight greater variability can be noticed in the first sample.

Step-by-step explanation:

The coefficient of variation of a sample is defined as the ratio between the mean standard deviation and the sample mean. And it represents the percentage relation of the variation of the data with respect to the average.

CV=\frac{S}{\bar X}

In the case of the first sample you have:

CV=\frac{0.1252}{1.57}=0.07975

In the case of the second sample you have:

CV=\frac{0.1317}{1.72}=0.07657

The relative variability is almost equal in both samples a slight greater variability can be noticed in the first sample.

6 0
3 years ago
The college athletic director recorded the highest noise levels reached during 7 sporting events. The highs were:
sergiy2304 [10]

Answer:

90

Step-by-step explanation:

Mean:

(88 + 88 + 88 + 87 + 84 + 97 + 95)/7

627/7

89.57

90

8 0
3 years ago
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