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Ivanshal [37]
3 years ago
11

What are the domain and range of this function? PLZ HELP ILL MARK AS BRAINLIEST!!!

Mathematics
1 answer:
Olenka [21]3 years ago
7 0

Answer:

Domain {-5, -4, 1, 2, 4, 5}

Range {-4, -2, 1, 2, 4, 5}

Step-by-step explanation:

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If a projectile is launched vertically upward from 800 ft above the ground with an initial velocity of 80 ft per second, its hei
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Hello!

10 seconds to return to the ground.

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Find the amount of time taken to reach the ground by setting the equation equal to 0:

0 = -16t² + 80t + 800

Factor out -16 from the equation:

0 = -16(t² - 5t - 50)

Factor the terms inside of the parenthesis:

0 = -16(t - 10)(t + 5)

Find the zeros:

t - 10 = 0

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t = -5

Time can only be positive in this instance, so the correct answer is 10 sec.

Find the time by substituting in 576 for the height:

576 = -16t² + 80t + 800

Subtract 800 from both sides:

-224 = -16t² + 80t

Rearrange:

0 = -16t² + 80t + 224

Simplify:

0 = -16(t² - 5t - 14)

0 = -16(t - 7)(t + 2)

t = 7 seconds.

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3 years ago
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oksano4ka [1.4K]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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