SOLUTION: A hiker walks 4 miles east and then turns south.of the hiker finishes 7.2 miles from the starting point,How far south did the hiker go? Round your answer to the nearest integer

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: A hiker walks 4 miles east and then turns south.of the hiker finishes 7.2 miles from the starting point,How far south did the hiker go? Round your answer to the nearest integer      Log On


   



Question 935074: A hiker walks 4 miles east and then turns south.of the hiker finishes 7.2 miles from the starting point,How far south did the hiker go? Round your answer to the nearest integer
Answer by 428225(90) About Me  (Show Source):
You can put this solution on YOUR website!
Use Pythagoras' Theorem.
(a)^2+(b)^2=(c)^2
In this case you have to rearrange it to find b
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Therefore
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(7.2)^2-(4)^2=(b)^2
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Now square root everything to find the value of b
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b=5.986651819 miles south
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b=6 miles to the nearest integer