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Mumz [18]
3 years ago
5

PLS HURRY and thanks if you answere. A car accelerated from 45 m/S to 0 m/s in 10 seconds what is the average acceleration of th

e car.
1 the variable you are looking to find
2 all the massacre to find the answer
3 the answer including the correct unit
Mathematics
1 answer:
Eva8 [605]3 years ago
4 0

1: You are looking to find the mps increase over a second

2: 45 m/s from 0 m/s in 10 secs that is 4.5 m/s per second

3: The acceleration is 4.5m/s

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I NEED HELP PLEASE, THANKS! :)
NISA [10]

Answer:   \bold{b)\quad \dfrac{2\pi}{3},\dfrac{4\pi}{3},0}

<u>Step-by-step explanation:</u>

Note the following identities: tan² x = sec²x - 1

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tan² x + sec x = 1

(sec² x -1) + sec x = 1

sec² x + sec x - 2 = 0

(sec x + 2)(sec x - 1) = 0

sec x + 2 = 0     sec x - 1 = 0

sec x = -2          sec x = 1

\dfrac{1}{\cos x}=-2\qquad \dfrac{1}{\cos x}=1\\\\\cos x=-\dfrac{1}{2}\qquad \cos x=1\\\\x=\dfrac{2\pi}{3}, \dfrac{4\pi}{3}\qquad x=0

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3 years ago
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Answer:

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Step-by-step explanation:

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