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Akimi4 [234]
3 years ago
5

Help me solve each question

Mathematics
1 answer:
liraira [26]3 years ago
4 0

Answer:

32

Step-by-step explanation:

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A bag contains 5 red marbles 3 green marbles 2 purple marbles 2 orange marbles and 1 blue marble which color is less likely to b
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Step-by-step explanation:

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3 years ago
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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
tiny-mole [99]

Hello!

10 seconds to return to the ground.

7 seconds to reach 576 feet above the ground.

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

t = 10

t + 5 = 0

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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:

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

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8 0
3 years ago
I need help with this please
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
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