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Yuri [45]
3 years ago
13

A mechanic charges $330 for 6 hours of labor.

Mathematics
1 answer:
kompoz [17]3 years ago
5 0
For 6 hours charges $330

for 9 hours charges x
---------------------------------

 x = 9*330/6 = 495 so choice C. is right 
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The Ferris wheel has a radius of 70 feet. The distance between the wheel and the ground is 4 feet. The rectangular coordinate sy
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Answer:

The equation of the circular wheel is x^2+(y-74)^2=(70)^2.

Step-by-step explanation:

Given :

Radius of Ferris wheel r = 70 feet.

The distance between the wheel and the ground = 4 feet.

Also, the rectangular coordinate system shown has its origin on the ground directly below the center of the wheel.

So the x coordinate of center of wheel must  be 0 , and y coordinate = 70 + 4 = 74

Thus, Coordinates of center = (0,74)

The equation of circle is given by :-

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Now center (h,k) = (0,74) and r = 70 , we get

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