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nignag [31]
3 years ago
15

A group of 11 students have a mean average spelling test score of 7. Another student had a score of 8. What is the mean score of

all twelve children?
Mathematics
1 answer:
Elena L [17]3 years ago
7 0

Answer:

7.083

Step-by-step explanation:

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Answer:

x=17

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Step-by-step explanation:

First plug in the numbers:

x-3=14 x-2=y

What does 3+14=? Well it should equal 17 if added properly.

So then this would be true 17-3=14.

Then if x-2=y you could write 17-2=15. Then y=15

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Step-by-step explanation:

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