Answer:
Step-by-step explanation:
1) Rewrite 
in the form
, where a = y and b = 1.
2) Use Square of Difference: 
.
3) Factor 
.
1 - Ask: Which two numbers add up to 6 and multiply to -7?
-1 and 7
2 - Rewrite the expression using the above.
Outcome/Result: 
4) Rewrite the expression with a common denominator.
5) Expand.
6) Collect like terms.
7) Simplify 
to 
Answer:
D
Step-by-step explanation:
It is not binomial random variable , since the number of red cards is unknown in the deck of cards in the starting of experiment.
As given in the question,
Number of cards are unknown.
Number of red cards are unknown in the starting of experiment.
Number of times process done =10
For binomial random variable number of red cards should be known.
Therefore, it is not binomial random variable , since the number of red cards is unknown in the deck of cards in the starting of experiment.
Learn more about binomial random variable here
brainly.com/question/14282621
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(4^2+8^2)^.5 = 8.944
It's not 12.
So 4,8,12 can't be the side lengths of a right triangle.
