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Bladimir
Questions (2)
1. The numerator and denominator of a fraction are in the ratio of 3 to 4. If 4 is added to the numerator and subtracted from
2 answers
1,354 views
If B is the midpoint of AC, and C is the midpoint of BD, then what percent of CD is AC?
A. 25% B. 50% C. 100% D. 200% HELP Is it
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Answers (4)
3.60
number 1 choice b is 9
Oh thanks. I actually thought it was 33% because there were 3 pieces
CARDS:red=6; black=16 ... total 22 a.(6 nCr 4)/(22 nCr 4) = .002 b.(6 nCr 2)(16 nCr 2)/(22 nCr 4)= .246 c.1-(.249) = .751 ... get d first d.(16 nCr 22)/(22 nCr 4) = .249
