27 km 36 km What is the length of the hypotenuse?
1 answer:
Answer:
The length of hypotenuse is 45 kilometers
Step-by-step explanation:
Assuming that given lengths are of perpendicular and hypotenuse, and the triangle is a right angled triangle
Perpendicular = P = 27 km
Base = B = 36 km
Hypotenuse = H = ?
We can use Pythagoras theorem for finding the length of hypotenuse
The Pythagoras theorem is given by:
Putting the values, we get
Taking square root on both sides
Hence,
The length of hypotenuse is 45 kilometers
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Answer:
A sample of 1068 is needed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
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In which
z is the zscore that has a pvalue of .
The margin of error is:
95% confidence level
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At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.03 for the estimation of a population proportion?
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n is found when M = 0.03.
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A sample of 1068 is needed.