(у-4) (3x+5y-2) How do I multiply the following expression?
1 answer:
Answer:
Step-by-step explanation:
You will use the FOIL method, which is very similar to the distributive property.
In order to do multiply correctly, multiply the y by 3x, 5y, and -2. You should get:
Then multiply the -4 by 3x, 5y, and -2 where you should get:
By using the foil method, you got rid of the parentheses. Now you can simply combine like terms and get your final answer:
I hope this helps you!
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Answer:
The probability of flipping Heads at least once is .
Step-by-step explanation:
The probability of an event, say <em>E</em>, is the ratio of the favorable outcomes to the total number of outcomes, i.e.
The sample space of flipping two coins is:
S = {HH, HT, TH and TH}
Total number of outcomes = 4
Compute the probability of flipping Heads at least once as follows:
Let <em>X</em> = heads.
P (X ≥ 1) = P (X = 1) + P (X = 2)
Thus, the probability of flipping Heads at least once is .
The experiment of flipping a coin is a binomial experiment.
Since there are only two outcomes of the experiment, either a Heads or a Tails.
So if <em>X</em> is defined as the number of heads in <em>n</em> flips of a coin then the random variable <em>X</em> follows a binomial distribution with probability <em>p = 0.5</em> of success.