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2 years ago

A child walks due east on the deck of a ship at 3 miles perhour.

Mathematics

1 answer:

VladimirAG [237]2 years ago

6 0

Answer:

16.28 mph ; 79.38°

Step-by-step explanation:

Given the following :

Speed of child due east = 3mph

Speed of ship due North = 16mph

Relative speed of th child is obtained by using Pythagoras rule to find the hypotenus

Relative Speed = Sqrt(3² + 16²)

Relative Speed = sqrt(9 + 256)

= sqrt(265)

= 16.2788 mph

= 16.28 mph

From trigonometry ;

Tanθ = opposite / Adjacent

Tanθ = (16 / 3)

Tanθ = 5.333

θ = tan^-1(5.333)

θ = 79.379°

θ = 79.38°

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Answer:

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Step-by-step explanation:

From the question we are told that

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substituting values

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Since we are considering a on tail experiment

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$MOE = t_{df , \frac{\alpha }{2} } * \frac{\sigma}{\sqrt{n} }$

substituting values

$MOE = 1.699 * \frac{4 }{\sqrt{64} }$

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he 90% confidence interval for the true average age of all students in the university is evaluated as follows

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1 year ago

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