Math HELP!!!(急!) (急!) (急!) (急!) (急!) (急!) (急!)

2007-09-12 1:13 pm

(急!) (急!) MATH HELP(急!) (急!)

Decide whether each statement is always true, sometimes true, or never true.Ecplain.

a>Zero is greater than another integer.

b>An integer is greater than its opposite.

c.Two integers with different signs are opposites.

回答 (1)

noddy

2007-09-12 6:15 pm

✔ 最佳答案

integer 中文是整數, 它有分正整數，和負整數等。ie -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10。那你看

a. Zero is greater than another integer. ~~~~~~ sometimes true 。解︰0 只會大過負整數，ie 0 > -1；不會大過正整數，ie 1>0

b. An integer is greater than its opposite. ~~~~~ sometimes true。解︰只有當它是正整數時，它才會大過它的 opposite (即負整數)

c. Two integers with different signs are opposites. ~~~~~ always true 。解︰兩個數，一個正，一個負，(因為with different signs)那就是 opposite, ie, 9 & -9。(注︰如果你所指的 two integer ，是不同數字，如一個是 9, 一個是 -7，那就不是opposite。但我想你的問題該不會是這樣問)

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