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drek231 [11]
2 years ago
5

D) Suppose you pick one marble from the bag at random. Find the expected value of its number.

Mathematics
1 answer:
Vaselesa [24]2 years ago
5 0

C) The probability that you pick at least one purple marble is 98%.

<h3><u>Probability</u></h3>

The question is incomplete, since the number of marbles of each color in the bag is missing: 3 blue, 5 green, and 2 purple marbles.

Now, to answer the questions, the following calculations must be done:

  • C) 100 - (2/9x9) = X
  • 100 - 2 = X
  • 98 = X

Learn more about probability in brainly.com/question/27656131

#SPJ1

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Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation h = ?16t + 160t + 12
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The time taken for the flare to hit the ground is approximately 10.7 seconds.

Step-by-step explanation:

Given : Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation h =- 16t^2+ 160t + 120 models the h height at t seconds of the flare.

To find : How long will it take for the flare to hit the ground?

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The equation  h =- 16t^2+ 160t + 120 models the h height at t seconds of the flare.

The flare to hit the ground when h=0.

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-16t^2+ 160t + 120=0

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x=\frac{-160\pm\sqrt{160^2-4(-16)(120)}}{2(-16)}

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