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Rasek [7]
3 years ago
9

If you take 5 quizzes and get scores of 95%, 95%, 80%, 85%, and 75%, how would you find your mean quiz score?

Mathematics
1 answer:
avanturin [10]3 years ago
4 0

Answer:

The answer is C.

Step-by-step explanation:

Remember, to find the mean of some scores, you must add all the scores together, then you must divide by the number of scores you added. In this case, you would divide by four, because you had four numbers you added to gether.

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<span>The <u>correct answers</u> are:

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Explanation<span>:

We can first write this in standard form, ax</span></span>²<span><span>+bx+c=0. To do this, we will add 11x to both sides:
x</span></span>²<span><span>+24+11x=-11x+11x
x</span></span>²<span><span>+11x+24=0.

Now we can factor this. Look for factors of c, 24, that sum to b, 11. Factors of 24 are:
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The factors we need are 3 and 8, since they sum to 11. This gives us factored form:
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Using the zero product property, we know that in order to have a product of 0, one or both of the factors must be 0. This means we have:
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Solving the first equation:
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x=-3.

Solving the second equation:
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