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atroni [7]
3 years ago
8

12 posters for 36 student;21 poster for 63 students

Mathematics
1 answer:
TEA [102]3 years ago
8 0
Mhm thats most definitely a trick question .
You might be interested in
Cuánto es –a +28=14???
eimsori [14]

Answer:

a=14

Step-by-step explanation:

-a+28=14

So -a=-14

so a=14

6 0
2 years ago
Read 2 more answers
60 + 84<br> the sum of the numbers as a product of their GCF is?
Deffense [45]
The sum is the gcf, if 60 plus 84 is 148 then wouldn't it be 148 that's what they all have in common, you can use a calculator to figure this out like say 148 times 2 equals 296, divide 296 by 60. Does it go in?
7 0
3 years ago
What is 7/8 x 1/3 x 2/3? Pls help me.
Step2247 [10]
7/36
Multiply the top together and then the bottom together and the final numbers on top and bottom is your answer.
8 0
3 years ago
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The function I(x) = x is called?
Serga [27]

Answer:

absolute value function

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
On a multiple-choice test. Abby randomly guesses on all seven questions. Each question
Murrr4er [49]

Answer:

0.173 probability that she gets exactly three questions correct.

Step-by-step explanation:

For each question, there are only two possible outcomes. Either she guesses the correct answer, or she does not. The probability of guessing the correct answer for a question is independent of other questions. 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.

Seven questions:

This means that n = 7

Each question has four choices.

Abby guesses, which means that p = \frac{1}[4} = 0.25

Find the probability to the nearest thousandth, that Abby gets exactly three questions correct.

This is P(X = 3).

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

P(X = 3) = C_{7,3}.(0.25)^{3}.(0.75)^{4} = 0.173

8 0
3 years ago
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