A rope is attached to a tent pole at a height of 3.5 feet above the ground. The rope connects to a point that is 6.8 feet from t
he bottom of the pole. To the nearest tenth of a foot, what is the length of the rope? 7.6 ft 1.2 ft 5.8 ft 4.5 ft
2 answers:
I'm sorry but I'm confused, Is the rope connected like A or B, if it's connected like the picture A then it's 5.8ft but if connected like B then it is 7.6ft
Answer:
The length of the rope is 7.6 ft ( approx )
Step-by-step explanation:
Let, The line segment AB shows the length of the pole, ( where A is the top and B is the bottom ) and line segment AC shows the rope,
According to the question,
AB = 3.5 ft,
BC = 6.8 ft,
Since, the pole must be vertical with respect to the ground,
That is, ∠ABC = 90°,
Thus, by Pythagoras theorem,
AC² = AB² + BC²
⇒ AC² = 3.5² + 6.8² = 12.25 + 46.24 = 58.49,
⇒ AC = √ 58.49 = 7.64787552 ≈ 7.6 ft
Hence, the length of the rope is approximately 7.6 ft.
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Step-by-step explanation:
The equation to find the half-life is:
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It is known that after a half-life there will be twice less of a substance than what it intially was. So, we can get a simplified equation that looks like this, in terms of half-lives.
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Hope this helps!! Ask questions if you need!!