不会做了简单数学两道救救我

guo573874201 · 发表于 2011-9-13 04:36:12

1. When positive integer x is divided by 5, the remainder is 3; and when x is divided by 7, the remainder is 4.When positive integer y is divided by 5, the remainder is 3; and when y is divided by 7, the remainder is 4.If x > y, which of the following must be a factor of x - y?

A.12
B.15
C.20
D.28
E.35正确我算出的x-Y=20 ‘
2.The sides of a square region, measured to the nearest centimeters, are 6 centimeters long.The least possible value of the actual area of the square region is

A.36.00 sq cm
B.35.00 sq cm
C.33.75 sq cm
D.30.25 sq cm正确
E.25.00 sq cm
告诉我具体的过程吧谢谢了

wyw1018 · 发表于 2011-9-13 06:13:15

第二题答案是e吧

不会做了简单数学两道救救我

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不会做了 简单数学两道 救救我

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不会做了简单数学两道救救我