Answer:
i know what is the correct answer
letter A
Step-by-step explanation:
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Answer:
Sample size is
Step-by-step explanation:
Given that,
Margin of error %
Confidence level %
Suppose, sample proportion
i.e.
We know that,
Margin of error
∴
squaring on both side,
∴
Hence, the sample size is,
Hence, the correct option is
Answer:
Let total non-fiction books = 3x
And total fiction books = 5x
After reading 6 non-fiction books, remaining non-fiction books = 3x-6
After reading 13 fiction books, total fiction books remaining fiction books = 5x-13
(3x-6)/(5x-13) = 3/4
Solving for x, we get x = 5
So total non-fiction books = 15 and fiction books=25
So total number of books bought = 40
6. 1/2 divide 7 by both #
7. 1/4 divide 2 by both#
8. 2/3 divide 8 by 4, then divide 24 by 4 to get 4/6 to reduce it divide 2 by both #
9. 5/7 divide 3 by both #
10. 3/4 divide 18 and 24 by 3= 6/8 then divide these two # by 2