in a fundraising committee of 90 people the ratio of men to women is 7:2. find the number of women required to join the existing
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Answer:
See below for the matrix
D = 100
Step-by-step explanation:
3 2 1
D = -1 -2 4 = 3(-2)(-3) + 2(4)(1) + 1(-1)(-6)
1 -6 -3
- 1(-2)(1) - 3(4)(-6) - 2(-1)(-3)
= 18 + 8 + 6 + 2 + 72 - 6
= 100
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