a. n<7
b. n=27
c. n>-27
d. n=-27
2007-04-03 04:36:15 · 8 answers · asked by dolly 2 in Science & Mathematics ➔ Mathematics
THIS IS A TRICK QUESTION IT LOOKS LIKE TWO OF THESE ANSWER WOULD WORK BUT THERE IS ONLY ONE
STEP 1
SOLVE FOR N
-3N=81
N=-27
IF N = -27 AND YOU TESTED THIS YOU WOULD GET
-3(-27)<81
81<81 SO "D" WOULD BE WRONG
N>-27 WOULD PROVE RIGHT "C" IS THE CORRECT ANSWER
2007-04-03 05:09:37 · answer #1 · answered by GENE D 1 · 0⤊ 0⤋
To answer this:
-3n<81
Divide by -3 on both sides then reverse the sign
-n>27
or n>-27
2007-04-03 06:15:05 · answer #2 · answered by TrustRegainedFriendshipRestored 2 · 0⤊ 0⤋
n>-27
2007-04-03 04:54:39 · answer #3 · answered by lcjjr87 2 · 0⤊ 0⤋
The answer is C. If the answer were d, then you'd have 81<81 which isn't true.
2007-04-03 04:43:00 · answer #4 · answered by nyquist1995 2 · 0⤊ 0⤋
-3N < 81
N > 81/-3 (flip the equality if you mul or div by negitive)
N > -27
2007-04-03 04:40:42 · answer #5 · answered by Grant d 4 · 1⤊ 0⤋
When you divide both sides by (-3), you need to "flip" the sign.
So the answer is n > -27
2007-04-03 04:41:50 · answer #6 · answered by Mathematica 7 · 0⤊ 0⤋
-3n<81
-3n/-3<81/3
n>-27
2007-04-03 05:14:33 · answer #7 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
- 3n < 81
- 3n / - 3 > 81 / - 3
n > - 27
- - - - - - - -s-
2007-04-03 04:40:48 · answer #8 · answered by SAMUEL D 7 · 0⤊ 0⤋