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4 years ago

C

Mathematics

1 answer:

vesna_86 [32]4 years ago

8 0

Answer:

Step-by-step explanation:

three angles measuring 75°, 45°, and 60°

75+45+60 = 180 -> can create triangle

three sides measuring 7 m, 10 m, and lym (assume this is 16)

satisfy this a-b<c<a+b -> can create triangle

three angles measuring 40°, 50%, and 60°

40+50+60 = 150 ≠ 180 -> cannot create triangle

three sides measuring 3 cm, 4 cm, and 5 cm

satisfy this a-b<c<a+b -> can create triangle

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-32x + 45 – 7 (2x – 9) = 101

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3 years ago

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For each of the following binomial random variables, specify n and p. (a) A fair die is rolled 50 times. X = number of times a 5

Keith_Richards [23]

Answer:

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Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

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

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And $p$ is the probability of X happening.

(a) A fair die is rolled 50 times. X = number of times a 5 is rolled

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You buy 16 boxes of cereal, so $n = 16$ .

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He plays 26 games, so $n = 26$ .

He wins 25% of the time, so $p = 0.25$

We have that $\mu = np$ . So $\mu = 26*0.25 = 6.5$

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