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marishachu [46]
2 years ago
7

I need steps on how to do this!

Mathematics
1 answer:
pantera1 [17]2 years ago
5 0

Answer:

  3.856 seconds

Step-by-step explanation:

Set d=10 and solve for t.

  10 = -12t^2 -3t +200

  12t^2 +3t -190 = 0 . . . . . . subtract the expression on the right to put into standard form

This is a quadratic equation, so the quadratic formula can be used to find solutions. That formula tells you the solution to ...

  ax^2 +bx +c = 0

is

  x = (-b ±√(b² -4ac))/(2a)

__

We have a=12, b=3, and c=-190. The variable in our equation is t, not x. Putting these values into the formula, we find ...

  t = (-3 ±√(3² -4(12)(-190)))/(2·12)

  t = (-3 ±√9129)/24

  t = (-3 ±95.546)/24 = -4.106, +3.856

The coconut will be about 10 ft off the ground after 3.856 seconds.

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kherson [118]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
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Lady bird [3.3K]

Answer:

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Step-by-step explanation:

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We can divide by 3 / 5 on both sides, which is the same as multiplying 5 / 3 on both sides:

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3 years ago
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aleksklad [387]
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8 0
3 years ago
Read 2 more answers
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kenny6666 [7]

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Answer:

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Step-by-step explanation:

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