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3 years ago

Help me please! I don't really understand

Mathematics

1 answer:

MaRussiya [10]3 years ago

8 0

It’s basically finding slope so it’s
1/4

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Which expression is the factorization of x² + 10x + 21?

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The answer is (x+3)(x+7)

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4 years ago

a random sample of 4 claims are selected from a lot of 12 that has 3 nonconforming units. using the hypergeometric distribution

Sloan [31]

Answer:

The probability that the sample will contain exactly 0 nonconforming units is P=0.25.

The probability that the sample will contain exactly 1 nonconforming units is P=0.51.

Step-by-step explanation:

We have a sample of size n=4, taken out of a lot of N=12 units, where K=3 are non-conforming units.

We can write the probability mass function as:

$P(x=k)=\frac{\binom{K}{k}\binom{N-K}{n-k}}{\binom{N}{n}}$

where k is the number of non-conforming units on the sample of n=4.

We can calculate the probability of getting no non-conforming units (k=0) as:

$P(x=0)=\frac{\binom{3}{0}\binom{9}{4}}{\binom{12}{4}}=\frac{1*126}{495}=\frac{126}{495} = 0.25$

We can calculate the probability of getting one non-conforming units (k=1) as:

$P(x=1)=\frac{\binom{3}{1}\binom{9}{3}}{\binom{12}{4}}=\frac{3*84}{495}=\frac{252}{495} = 0.51$

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4 years ago

The cost of a set of four tires is $192 what is the unit rate for the cost of one tire

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I believe the unit rate is 48 dollars per tire.

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4 years ago

Suppose that you are asked to pick a card from a deck of 52 cards. Once you have selected a card, you place it face down on the

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Answer:

Step-by-step explanation:

The second card is influenced by the first only in that you have not replaced the first card. That makes a difference.

1/52 is the probability for the first card.

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Do 230 - 30% and the do - 15% use math papa it's very helpful

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