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Lilit [14]
3 years ago
12

Please help me with Q 7 c

Mathematics
2 answers:
frez [133]3 years ago
8 0

Answer:

11.25 km h^-2

Step-by-step explanation:

Acceleration = increase in velocity / time

= 90 - 0 / 8

= 11.25 km h^-2.

DIA [1.3K]3 years ago
4 0

v_{i}  = 0 \: (from \: rest) \\ v_{f}  = 90 \: km \: per \: hr \\ t_{i}  = 0  \\ t_{f}  = 8 \: hr \\ a =  \frac{(v_{f} - v_{i})}{(t_{f} - t_{i})}  \\ a = \frac{90}{8}  \\ a =  \frac{45}{4} km/ {hr}^{2}
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Management at a seaside resort is publishing a brochure and wants to include a statement about the proportion of clear days duri
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Step-by-step explanation:

Formula to calculate the sample size 'n' , if the prior estimate of the population proportion (p) is available:

n= p(1-p)(\dfrac{z}{E})^2

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E=  margin of error

Let p be the population proportion of clear days.

As per given , we have

Prior sample size : n= 150

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Prior estimate of the population proportion of clear days = p=\dfrac{117}{150}

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