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24 April, 00:09

Which of these is NOT an example of a reference direction?

A. +

B. S

C. down

D. 2 E

+1
Answers (2)
  1. 24 April, 00:12
    0
    D is the answer obviously
  2. 24 April, 00:19
    0
    So we can easily tell that the answer is D. So the + means positive or in the positive side of the graph in the y or x. So that also references direction. The S also stands for South in a compass. C is of course direction down is a direction. That only leaves D which is 2 E or 2e which is a number not a direction. 2e means 2 times euler's number.

    Answer: D
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