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Answer:
is the angle of elevation from the boat to the lighthouse.
Step-by-step explanation:
From the boat, the angle through which you will raise your head to see the light house is the angle of elevation, which is .
See graph for the illustration.
The correct answer is A
To make sure we don't have negatives under the square root, we specify that 
(x is greater than or equal to 0). We'll use this fact later on
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Start with the given inequality
and square both sides to get 
. Couple this with the fact that means we have this compound inequality 
What does this mean? It means that we can pick any value from 0 to 49 (including both endpoints) and it will be a solution to the inequality. This applies to the values 49, 48 and 44
Answers: Choice C, Choice D, Choice E
--------------------------------------------
Start with the given inequality
What does this mean? It means that we can pick any value from 0 to 49 (including both endpoints) and it will be a solution to the inequality. This applies to the values 49, 48 and 44
Answers: Choice C, Choice D, Choice E
