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七月JJ 两云彩
各位"大牛小牛",joy 这里有礼了,终于找到了“家"!!!
1, Does class A have the same range as class B, if size A = size B = 26 and max A = max B = 70?
(1) min A = min B =10;
(2) mean A = mean B = 50. (E)
难道range 不等于max-min吗?如果是这样的话,答案应该是A.
2,Tax T is levied on profit P of the Nth month if P is over $5000 by the formula:T =P+N的二分之一方,what is the profit of september?
A,T-Sep.is over T-Apr.$4000
B,T-Sep is over T-Jan.$2000
七月JJ 答案D,不懂.........
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