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AleksAgata [21]
3 years ago
14

Factor completely 49x^2-81.

Mathematics
1 answer:
Tasya [4]3 years ago
5 0

Answer:

C.

Step-by-step explanation:

Since both terms are perfect squares, factor using the difference of squares formula to get you the answer

(7x+9)(7x-9)

 

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Using the concept of speed-distance-time, we find that the diameter of the circular path is 12 inches.

Step-by-step explanation:

Given that the object completes one revolution in 8 seconds. So, the circular speed of the object is 2πr/8 = πr/4 inches per seconds, where r is the radius of the circular path. The speed can be written as:

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But, it is given that the circular speed of the object is 90π inches per minute. So,

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For more explanation, refer the following link:

brainly.com/question/17978382

#SPJ10

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