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jeka57 [31]
3 years ago
13

The driving distance between Manchester and London is 195 miles. Farris intends to travel from Manchester to London by coach. Th

e coach will leave Manchester at 3.30pm.
Fairs assumes that the coach will travel at an average speed of 50 mph.

a) Using his assumption, work out Faris' arrival time in London.
Mathematics
2 answers:
sammy [17]3 years ago
3 0

Answer:

Faris' arrival time = 3:30 pm + 3 h 54 mnt = 7:24 pm

Step-by-step explanation:

Driving distance between Manchester to London = 195 miles

Coach left Manchester = 3.30 pm

Average speed of coach = 50 mph

Total time taken by the coach to reach the Manchester to London = 195÷50 = 3.9 h

0.9 h = 0.9×60 mnt = 54 mnt

Now,

        3.9 h = 3 h 54 mnt

Hence Faris' arrival time in London = 3.30 pm + 3 h 54 mnt = 7.24 pm

Brut [27]3 years ago
3 0
That would be 3 hours and 54 minutes, or 3.9 hours. All you’d have to do is divide 195 by 50, which is the miles traveled divided by the unit rate (mph)
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Answer:

z = 1.83<1.96

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<u>Step</u> :-1

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given sample size n =40

mean of the sample ×⁻ = 123.59 volts

standard deviation of sample σ = 0.31 volts

<u>Step2</u>:-

<u>Null hypothesis</u> :-

the sample is from a population with a mean equal to 120 volts.

H₀ : μ =120

<u>Alternative hypothesis:-</u>

H₁ : μ ≠120

<u>level of significance</u>:- α =0.05

<u>Step 3:</u>-

<u>The test statistic</u>

z = \frac{x_{-}-mean }{\frac{S.D}{\sqrt{n} } }

substitute values and simplification

z = \frac{123.59-120}{\frac{0.31}{\sqrt{40} } }

on simplification we get the calculated value

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<u>Conclusion</u>:-

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