62.52=27.39+t this is 7th grade math! plsss help!!1
1 answer:
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If you divide a fraction over a number, you can just muplitply the denominator (the number under the line) by the number by which you divide:
99 and 21 are divisible by 3, so we can divide them both by it:
but that's all we can do!
so let's multiply
and it's its simplest form
99 and 21 are divisible by 3, so we can divide them both by it:
but that's all we can do!
so let's multiply
and it's its simplest form
Answer:
Step-by-step explanation:
Question assumed: Find the probability that the number x of correct answers is fewer than 4.
1) Previous concepts
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
2) Solution to the problem
Let X the random variable of interest, on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
And we want to find this probability:
Answer:
The answer to your question is
Step-by-step explanation:
Real operation
Process
1.- Factor the denominators
2.- Simplify like terms
Cancel (x - y) and (x - 1) because they are in numerator and the denominator
This is the answer or you can expand
3.- Expand