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andrey2020 [161]

3 years ago

5

The infinite geometric sum formula can be used to write 0.126126126...as a fraction. What is the numerator of this reduced fract

ion?
aa. 7
B.14
C.42
D.126

1 answer:

igor_vitrenko [27]3 years ago

6 0

Answer:

B. 14 hope this helps

Step-by-step explanation:

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Ludmilka [50]

Total of $7.75
13 more quarters than nickels

15 nickels = $0.75
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28 - 15 = 13 coins
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A person gets on a Ferris wheel at the starting point. The starting point is 15 feet off the ground. The Ferris wheel has a radi

lisov135 [29]

<h2>Answer:</h2>

$\boxed{\frac{25}{2}(\sqrt{6}+\sqrt{2})+65}$

<h2>Explanation:</h2>

<em>The height of the rider from the ground after the Ferris wheel</em> equals <em>the starting point is 15 feet off the ground </em><em>plus </em><em>the radius of the Ferris wheel </em><em>plus </em><em>the opposite side of the triangle ΔABC </em>(See figure below).<em> </em>Hence our goal is to find this side. We have the angle $11\pi /2=165^{\circ}$ , therefore the angle ∠BAC = 165° - 90° = 75°. So this side can be found using trigonometry:

$\overline{BC}=\overline{AB}sin(75^{\circ})=50sin(75^{\circ})=\frac{25}{2}(\sqrt{6}+\sqrt{2})$

Finally, the height is:

$H=\frac{25}{2}(\sqrt{6}+\sqrt{2})+15+50 \\ \\ \boxed{H=\frac{25}{2}(\sqrt{6}+\sqrt{2})+65}$

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Step-by-step explanation:

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