What is -2/3 - (1 1/3)

Mathematics

2 answers:

statuscvo [17]3 years ago

6 0

If i did it right that should equal to -2

OverLord2011 [107]3 years ago

3 0

-2/3 - (1 1/3)

-2/3 - ( 4/3)

-6/3

hope this helps

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A restaurant has an electronic system that randomly selects customers when they pay for their meal to

polet [3.4K]

Using the binomial distribution, it is found that there is a 0.81 = 81% probability that NEITHER customer is selected to receive a coupon.

For each customer, there are only two possible outcomes, either they receive the coupon, or they do not. The probability of a customer receiving the coupon is independent of any other customer, which means that the binomial distribution is used to solve this question.

Binomial probability distribution

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

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

The parameters are:

x is the number of successes.
n is the number of trials.
p is the probability of a success on a single trial.

In this problem:

For each customer, 10% probability of receiving a coupon, thus $p = 0.1$ .
2 customers are selected, thus $n = 2$

The probability that neither receives a coupon is P(X = 0), thus:

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

$P(X = 0) = C_{2,0}.(0.1)^{0}.(0.9)^{2} = 0.81$

0.81 = 81% probability that NEITHER customer is selected to receive a coupon.

A similar problem is given at brainly.com/question/25326823

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3 years ago

Your parents win the lottery and offer you an incredible deal. They will pay you money each day for 30 days for doing your chore

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One million dollars on the 30th day, it amounts to more than the collective of pennys would.

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2 years ago

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Which values have exactly 2 significant figures? Check all that apply.

JulijaS [17]

ANSWER

Options B, C and D have exactly 2 significant figures.

EXPLANATION

To see whether the numbers have exactly 2 significant figures, round all to 2 significant figures. The ones that remains the same have exactly 2 significant figures.

$302\approx 300$ yards to 2.s.f