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shutvik [7]
3 years ago
8

Write an equation that represents"Four less than the difference of half a number and 3 is 20 ."Use X for the variable.​

Mathematics
1 answer:
Alex73 [517]3 years ago
8 0

Answer:

{(1/2)x-3}-4=20

That is your answer.

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A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed, t
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The boat's travel from when it was first noticed until it stopped is 554.89 ft.

<h3>What is trigonometry?</h3>

Trigonometry is a branch of mathematics that deals with the relationship between sides and angles of a right-angle triangle.

We have:

A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly.

From the given information we can draw a right-angle triangle.

14°52' = 14 + 0.86 = 14.86 degree

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In the right-angle triangle ACD

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In the right-angle triangle DBC:

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AB = AC - CB

AB =  753.772 ft - 198.886 ft

AB = 554.886 ≈ 554.89 ft

Thus, the boat's travel from when it was first noticed until it stopped is 554.89 ft.

Learn more about trigonometry here:

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