Question

Which expression represents the difference between 2n and 15?

A) 2n - 15

B) 15 - 2n

C) Both A and B

D) Neither A nor B

Answer 1

http://mathforum.org/library/drmath/view/69177.html

Answer 2

i think it is both a nad b? is this right?

Answer 3

@msumner it's vague what they want. Technically, the answer is as follows...\[\text{A if}\ a\gt\frac{15}2\\\text{B if}\ a < \frac{15}2\\\text{C if}\ a = 0\]

Answer 4

Oops, I mistook the variable for being a. I intended n.

Answer 5

so its neather A
or B

Answer 6

It's d because of what they said above :)

Answer 7

thanks!!! i didnt really get it!

Answer 8

No, I don't think it's safe to say D. The answer is inconclusive. Ask your instructor how they interpret the difference ;-) Normally, the difference is interpreted as non-negative, so \[
|2n-15|=|15-2n|\]

Answer 9

i have 2 more questions then i will see if D is the answer!

Answer 10

A, B, and C are not correct because A and B are indecicive, so that only leaves D.

Answer 11

ok! thanks

Answer 12

D is the answer!!!! thanks @pedroSoccer!!!! <3

Answer 13

No problem :)