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Scorpion4ik [409]
2 years ago
13

What is the value of x?

Mathematics
1 answer:
kaheart [24]2 years ago
7 0

Answer:

I dont know, She left me a long time ago.

Step-by-step explanation:

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What is negative five over eight -5/8 b = 10
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Solve for and in the following simultaneous equations below; 5x−4y=8 and 2x+y=11.
lorasvet [3.4K]

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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

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

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t = 7 seconds.

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3 years ago
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