Question 5 (Fill-In-The-Blank Worth 3 points)
2 answers:
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Answer:
They most have common denominators.
Step-by-step explanation:
Let the following two rational expressions:
where p,a,q, b are integers, a and b the denominators are not 0, i.e.
We can add rational expressions only if their denominator is same.
That is why we find LCD to be .
Then,
Let the following two rational expressions:
where p,a,q, b are integers, a and b the denominators are not 0, i.e.
We can add rational expressions only if their denominator is same.
That is why we find LCD to be .
Then,
So, the correct answer is the last option that we can sum rational expressions if they have common denominator.
Answer:
○ C.
Step-by-step explanation:
Using the formula , where <em>n</em> represents the number of tosses, substitute 7 in for <em>n</em> to get this:
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