Using proportions, it is found that the least number of teams that will include all of the students is of 10.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
In this problem, 12 + 36 + 9 = 57 students will be divided into teams of no more than 6 students, hence:
57/6 = 9.5.
Rounding up, the least number of teams that will include all of the students is of 10.
More can be learned about proportions at brainly.com/question/24372153
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Answer:

Step-by-step explanation:
The question illustrates a binomial distribution and the given parameters are:
Given
-- sample size
--- probability of success
--- half of the participant
Using the binomial probability formula, we have:

For x = 3, the probability is:



Answer:
19/36 more than yesterday
Step-by-step explanation:
Since the denominators are different, multiply each fraction by the denominator of the other to be the same.
1/4 * 9 = 9/36
7/9 * 4 = 28/36
Now that the denominators are the same, you can subtract:
28/36 - 9/36 = 19/36
It depends on the systems of equations. I would stay away from elimination, go for substitution and graph only if asked.
This would be easiest to do by completing the square.
x^2+10x-2=0
x^2+10x=2
x^2+10x+25=27
(x+5)^2=27
x+5=±√27
x=-5±√27
(x+5+√27)(x+5-√27)