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Hey big spender…don’t spend on me!

October18

wedding_flowers“A new study in the US has found that the more people spend on their weddings and engagement rings, the more likely they are to divorce. Economic professors at Emory University carried out a study on over 3000 US men and women who had been married to a member of the opposite sex.

Professors Andrew M Francis and Hugo M Mialon found that men who spent between $2,000 and $4,000 on engagement rings were 1.3 times more likely to get divorced than men who spent between $500 and $2,000 on a ring.

For women, if a wedding cost over $20,000, they were 3.5 times more likely to divorce than women who spent between $5,000 and $10,000, the study claims.

Trying to cheat the system may not work for couples either; those who spent $500 or less on an engagement ring experienced higher rates of divorce, too.” (all prices in $US – source here)

H3 Comment: This research sounds convincing but, dear mathematicians, it only shows a statistical link between two sets of data. This is simply a mathematical link but does not prove that one factor (price spent on wedding rings, etc.) causes the other (divorce). There could very well be third factor involved, such as ratio of spending to savings. Frankly, H3 suggests that a low-cost ring be put around this study!

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NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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