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Mnenie [13.5K]
3 years ago
11

2. Factor completely: f(x) = x4 - 6x2? – 27

Mathematics
1 answer:
VladimirAG [237]3 years ago
6 0

Answer:

sorry don't know answer

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10. A company finds that 45% of first-time visitors to its website do not buy any of its products. If there are 75 first-time vi
vekshin1

Using the binomial distribution, it is found that the probability that exactly 36 of them buy a product is of 0.044.

For each first-time visitor, there are only two possible outcomes, either they buy a product, or they do not. The probability of a first-time visitor buying a product is independent of any other first-time visitor, hence the binomial distribution is used to solve this question.

<h3>What is the binomial distribution formula?</h3>

The formula is:

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:

  • 45% of first-time visitors to its website do not buy any of its products, hence 55% buy, that is, p = 0.55.
  • There are 75 first-time visitors on a given day, hence n = 75.

The probability that exactly 36 of them buy a product is P(X = 36), hence:

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

P(X = 36) = C_{75,36}.(0.55)^{36}.(0.45)^{39} = 0.044

More can be learned about the binomial distribution at brainly.com/question/24863377

8 0
2 years ago
Square the binomial below:<br> (x– 4)
likoan [24]

Answer:

x^2-8x+16

Step-by-step explanation:

(x-4)^2

x^2-4x-4x+16

x^2-8x+16

3 0
3 years ago
Don’t mind the work but can someone please help fast I’m stuck!! I also need to show work
balu736 [363]

Answer:

The answer for this problem is at the bottom of picture.

4 0
3 years ago
PLEASE ANSWER ASAP! *PICTURE ATTACHED*
a_sh-v [17]

Answer:

Pls send the options so I can confirm the answer.

5 0
3 years ago
Ariel works as a veterinary assistant and earns $19.60 per hour. Last week, she worked 7 1/2 hours each day on Monday through We
sergij07 [2.7K]
She earned 661.50 dollars. If she worked 7.5 hrs each day Mon-Wed, she worked 22.5 hrs from Mon-Wed because 7.5 times 3 is 22.5. She also worked 6 hrs on Sat. and 5.25 hrs on Sun., so in total, she worked 33.75 hrs last week. To find out her pay, we have to multiply the total hrs by the amount she gets payed, 19.60. 33.75x19.60 is 661.50, the amount she got payed last week.
7 0
3 years ago
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