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3 years ago

Please please please please help

Mathematics

1 answer:

Vera_Pavlovna [14]3 years ago

6 0

Hello!

3 A:

We know that Melissa is 29 meters deep in the Ocean. -29

We also know that she is going up 15 meters.

(-29) + 15 = -14

Melissa's final depth is -14 meters.

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elixir [45]

Answer:

0.0862 = 8.62% probability that Heather reaches in the bag and randomly selects 2 peanut butter cookies from the bag

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcoes.

The order in which the cookies are selected is not important, so we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes:

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$D = C_{8,2} = \frac{8!}{2!6!} = 28$

Total outcomes:

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Probability:

$p = \frac{D}{T} = \frac{28}{325} = 0.0862$

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3 years ago