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nadezda [96]
3 years ago
8

A person on a moving sidewalk travels 40 feet in 8 seconds. The moving sidewalk has a length of 200 feet. How long will it take

to move from one end to the other?
Mathematics
1 answer:
beks73 [17]3 years ago
4 0

Answer:

The man covers 200 ft in 40 seconds.

Step-by-step explanation:

A person is moving on the sidewalk from one end to the other end.

He walks 40 feet in 8 seconds.

Therefore his speed = \frac{distance covered}{time}

                                   = \frac{40}{8}

                                   = 5 ft/s^{2}

He covers the sidewalk distance at a rate of 5 feet every second.

To calculate the time taken to cover 200 ft,

time = \frac{distance to be covered}{speed}

time =\frac{200}{5}

<u>time  = 40 seconds</u>

Hence the man covers 200 ft in 40 seconds.

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A) The probability of Lisa being correct if she says a drink is flat is; 83.3%

B) The level of Lisa's accuracy in detecting a drink that is flat is; 83.3%

C) The reason why Lisa should be considered for to job is because; she has a high accuracy level and is not just complaining unnecessarily.

<h3>How do you interpret the right probability?</h3>

From the table showing Lisa's response to the last 100 drinks she bought attached, we see that;

A) When the drink was flat, she complained 5 times out of 6. Thus, if the drink is flat, the probability of her complaint being correct = 5/6 = 83.3%

B) Since she is 83.3% correct in detecting whether a drink is flat, then we can say that Lisa is 83.3% very good at detecting whether a drink is flat.

C) It would be good in recommending Lisa for the quality control job because she only complained 3 times out of 94 times that the drink was not flat while she was correct 5 out of 6 times when the drink was flat. Thus, she has a high accuracy level and is not just complaining unnecessarily.

Read more about complaints at; brainly.com/question/10111803

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Step-by-step explanation:

To solve the question we refresh our knowledge of the quotient rule.

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