3 years ago

Need help with this sheet (solve each equation using the quadratic formula)

Mathematics

1 answer:

Lesechka [4]3 years ago

8 0

Answer:

Step-by-step explanation:

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Suppose that a recent poll of American households about car ownership found that for households with a car, 39% owned a sedan, 3

Rama09 [41]

Answer:

The probability that of the 3 households randomly selected at least 1 owns a sports car is 0.1956.

Step-by-step explanation:

Let X = number of household owns a sports car.

The probability of X is, P (X) = p = 0.07.

Then the random variable X follows a Binomial distribution with n = 3 and p = 0.07.

The probability function of a binomial distribution is:

$P(X=x) = {n\choose x}p^{x}[1-p]^{n-x}\\$

Compute the probability that of the 3 households randomly selected at least 1 owns a sports car:

$P(X\geq 1)=1-P(X$

Thus, the probability that of the 3 households randomly selected at least 1 owns a sports car is 0.1956.

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a clothing store has sing has the sign shown is in the shop windoe pani sees the sing and want s to buy 3 shirts

goldfiish [28.3K]

What are we exactly supposed to solve for here

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What is the solution to this system of linear equations?

GarryVolchara [31]

Answer:

I got (1,2).

Step-by-step explanation:

Process of elimination:

Multiply the second equation by 3 to get same terms, subtract and solve for Y to get 2.

Plug 2 into second equation for Y to get x=1

(1,2)

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B the answer is B - hope this helps you out

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Answer:

Step-by-step explanation:

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