The probability that Boris will win the contest is:
P = 0.286
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How to get the probability?</h3>
For some given odds a:b, the probability is just computed as the quotient between a and b, which gives:
P = a/b
In this case, the odds are 2:7, so the probability that Boris will win the contest is:
P = 2/7 = 0.286
Written in percentage form, we get:
P = 28.6%
If you want to learn more about probability:
brainly.com/question/24756209
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Answer:

Step-by-step explanation:
The expression (2 square root sign 27) - (3 square root sign 32) is
.
To simplify, simplify inside the radicals by removing perfect square factors.


The expression becomes
.
This cannot be simplified anymore because whats under the radical is not the same.
I think this is the answer