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vfiekz [6]
2 years ago
4

Galileo wanted to release a wooden ball and an iron ball from a height of 100100100 meters and measure the duration of their fal

l. He found a plane with an incline of 12^\circ12 ​∘ ​​ 12, degree that he could climb until he could get to an altitude of 100\text{ m}100 m100, space, m. How far should Galileo walk up the inclined plane?

Mathematics
2 answers:
mixas84 [53]2 years ago
5 0
The inclination of the plane is 12 degrees and the vertical height or altitude of the plane is 100m. The scenario can be pictured as shown below in the image.

We get a right angled triangle with x being the hypotenuse. We have the angle and perpendicular side. Using the sine of given angle we can find the hypotenuse or the distance which Galileo would have to walk up the inclined plane.

sin(12)= \frac{100}{x} \\  \\ 
x= \frac{100}{sin(12)} \\  \\ 
x = 481

This means Galileo would have to walk 481 meters, rounded to nearest meter, on the inclined plane to achieve an altitude of 100m

Art [367]2 years ago
3 0

Answer:

480.97

Step-by-step explanation:

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I cannot see Zoe's work to explain the error, but the correct method of solving is listed:

x is the number of 30-second ads
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x+y=12(60)=720 would be the first equation; this is because while the ads together make 12 minutes, the ad times are in seconds.  This means we must multiply 12 by 60.

y=2x is the second equation

Our system is then
x+y=720
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We will use substitution to solve this.  Plug 2x in place of y in the first equation:
x+2x = 720

Combine like terms:
3x = 720

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x = 240

Substitute this value in for x in the second equation:
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Answer:

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Step-by-step explanation:

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Answer:

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Answer: The answer is (C).


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2 years ago
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