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jenyasd209 [6]
3 years ago
8

Using the slot method and multiple cases, calculate the probability that you would roll 3 sixes with four standard dice.

Mathematics
1 answer:
Elden [556K]3 years ago
4 0

Answer:

Pr = \frac{1}{216}

Step-by-step explanation:

 The sample space of a single dice is:

S = \{1,2,3,4,5,6\}

n(S) = 6

Required:

The probability of rolling 3 sixes

In a sample space of a roll of die, we have:

n(6) = 1

In a roll of dice, the probability of rolling a 6 is:

P(6) = \frac{n(6)}{n(S)}

P(6) = \frac{1}{6}

In 3 rolls, the probability is:

Pr = P(6)^3

Pr = [\frac{1}{6}]^3

Pr = \frac{1}{216}

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Find the area of the triangle formed by the origin and the points of intersection of parabolas y=− 1/3 (x−1)^2+8 and y=x^2−2x−3.
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Answer:

The area of the triangle formed by origin, and the points (4,5) and (-2,5) will be 15 sq. units.

Step-by-step explanation:

The two parabolas are y = - \frac{1}{3}(x - 1)^{2} + 8 and y = x² - 2x - 3.

Now, solving those two equations we will get the points of intersection.

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