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V125BC [204]
3 years ago
13

Please help answer correctly

Mathematics
1 answer:
shusha [124]3 years ago
6 0

Answer:

Independent is w

Dependent is b

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Answer:

(C) 100

Step-by-step explanation:

The average of a data set is just all the numbers added up divided by the amount of numbers.

If we already have 4 pieces of data and we're looking for one more, we have 5 data pieces.

This means that the sum of all of the numbers in the data set will be 91\cdot5=455 if the mean is 91.

We can find the missing value by adding up what we know and subtracting from 455.

87+86+93+89=355\\\\455-355=100

So Abby needs a 100% on her fifth history quiz to have an average of 91 on all her quizzes.

Hope this helped!

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3 years ago
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I have worked out the answer to the question, I hope it helps you. Please do not forget to check if this answer if reliable, I am not always correct

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