2. 职称英语
  3. If r is negative and s is positive, which of the following must be negative?A、|r

If r is negative and s is positive, which of the following must be negative?A、|r

游客2024-01-14  65
问题 If r is negative and s is positive, which of the following must be negative?
选项 A、|r|/s
B、|s|/r
C、r2+s
D、r2s2
E、
答案 B
解析 Based on the rules of positive and negative numbers, the only answer choice that must be negative is B, since it takes a positive and divides it by a negative. All other manipulations end up positive.
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