Hi, I'm curious about the question below. I felt that answer should be (a). Anyone knows? If |a|<4 and |b|>9, then the best we can say about |a-b| is that? (a) |a-b|<-5 (b) |a-b| > 5 (c) |a-b| <5 (d) |a-b| >13 Thanks loads, weijing
Follow Math Help Forum on Facebook and Google+
Originally Posted by weijing85 Hi, I'm curious about the question below. I felt that answer should be (a). Anyone knows? If |a|<4 and |b|>9, then the best we can say about |a-b| is that? (a) |a-b|<-5 (b) |a-b| > 5 (c) |a-b| <5 (d) |a-b| >13 Thanks loads, weijing An absolute value is allways positive or zero. So a) is definitely not a solution to your question. To find the answer to the question use the numberline.
Originally Posted by weijing85 If |a|<4 and |b|>9, then the best we can say about |a-b| is that? (a) |a-b|<-5 (b) |a-b| > 5 (c) |a-b| <5 (d) |a-b| >13 You have been told that it cannot be a). Recall that is the distance between . Distance is never negative. With that in mind, which is the answer?
Hmmm...so (b) is the answer?
Wait....not (b) .... I think its (c). Pls correct me if im wrong ((:
Originally Posted by weijing85 Wait....not (b) .... I think its (c). Pls correct me if im Let . What is the minimum distance between those two sets? The answer is not c).
View Tag Cloud