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Liono4ka [1.6K]
3 years ago
5

Number of Goldfish Cost

Mathematics
2 answers:
Volgvan3 years ago
5 0

Answer: The answer is AAA I did the work and got AAA.

Step-by-step explanation: Hope I help out a lot if not sorry.

Nata [24]3 years ago
3 0
A is the correct answer just took it
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Can someone tell me what is the slope of the line that includes points (4,-10) and (6,8)
miss Akunina [59]

Answer: hmmm no!

Step-by-step explanation:

3 0
3 years ago
The Jones family is landscaping their yard. Their yard yard is 160 square feet and one side is 10 feet long. What is the length
Stels [109]
The length of the other side of the yard is 16 feet
work: 160 divided by 10
hope it helps
3 0
3 years ago
The mailing list of an agency that markets scuba-diving trips to the Florida Keys contains 78% males and 22% females. The agency
choli [55]

Answer:

a) 0.98% probability that 17 of the 29 people are men.

b) 3.86% probability that the first woman is reached on the 8th call

Step-by-step explanation:

For each person chosen by the agency, there are only two possible outcomes. Either it is a man, or it is a woman. The probability of selecting a man or a women in each trial is independent from other trials. So we use the binomial probability distribution to solve this question.

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 combinations of x objects from a set of n elements, given by the following formula.

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

And p is the probability of X happening.

(a) What is the probability that 17 of the 29 people are men?

This is P(X = 17) when n = 29, p = 0.78. So

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

P(X = 17) = C_{29,17}.(0.78)^{17}.(0.22)^{12} = 0.0098

0.98% probability that 17 of the 29 people are men.

(b) What is the probability that the first woman is reached on the 8th call?

On the first 7 trials, all men, each with a 78% probability.

On the 8th trial, a women, with a 22% probability. So

P = (0.78)^{7}*0.22 = 0.0386

3.86% probability that the first woman is reached on the 8th call

4 0
3 years ago
QUESTION 1
Alexeev081 [22]

Answer:

1. 9

2. 10

Step-by-step explanation:

idk if those first 2 are right

6 0
2 years ago
A grocer has two kinds of candies: one sells for 90 cents per pound and the other sells for 40 cents per pound. How many pounds
Vladimir [108]

100(.85)=x(.9)+(100-x)(.4)
85=.9x+40-.4x 
45=.5x 
x=90

Thus 90lbs of the 90 cent and 10lbs of the 40 cent. 
3 0
2 years ago
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