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What value of x (from the five possible answer choices) will yield the 04 May 2016, 08:16
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C
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What value of x (from the five possible answer choices) will yield the lowest value of the expression ||12−3x|−|15+2x||?

A. 0
B. 1
C. -1
D. -2
E. -3



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C
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What value of x (from the five possible answer choices) will yield the 04 May 2016, 08:38
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Bunuel
What value of x (from the five possible answer choices) will yield the lowest value of the expression ||12−3x|−|15+2x||?

A. 0
B. 1
C. -1
D. -2
E. -3

Using the values given in the options is easiest way i could think of. I wonder if their is any other logical way to figure out the minimum value of x or atleast the range of x in which the minimum value of the expression is expected.
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What value of x (from the five possible answer choices) will yield the 04 May 2016, 09:03
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Bunuel
What value of x (from the five possible answer choices) will yield the lowest value of the expression ||12−3x|−|15+2x||?

A. 0
B. 1
C. -1
D. -2
E. -3

Hi

JUST for knowledge .
the minimum value of expression ||12−3x|−|15+2x|| will be 0, as it is MOD..
and where will it be -- when the two terms inside are equal..
so 12-3x = 15 +2x...... or 5x = -3.... or x=-3/5...

so I will see the nearest value to -3/5.. it is C. -1..
answer ||12−3x|−|15+2x|| = ||12-3*-1|-|15+2*-1|| = |15-13| = 2..

we need to just try for one more the closer one on other side of -3/5, that is 0..
ans |12-15|=3..
ans C
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What value of x (from the five possible answer choices) will yield the 04 May 2016, 11:21
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Bunuel
What value of x (from the five possible answer choices) will yield the lowest value of the expression ||12−3x|−|15+2x||?

A. 0
B. 1
C. -1
D. -2
E. -3

With chetan2u, answer will be (C)

If anyone is having any doubt with any option try testing with the options

A. ||12−3x|−|15+2x|| = ||12−3*0|−|15+2*0|| = ||12|−|15|| = 3

B. ||12−3x|−|15+2x|| = ||12−3*1|−|15+2*1|| = ||9|−|17|| = 8

C. ||12−3x|−|15+2x|| = ||12−3*−1|−|15+2*−1|| = ||15|−|13|| = 2

D. ||12−3x|−|15+2x|| = ||12−3*−2|−|15+2*−2|| = ||18|−|11|| = 7

E. ||12−3x|−|15+2x|| = ||12−3*−3|−|15+2*−3|| = ||21|−|9|| = 12


So, You see answer will be (C) 2
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What value of x (from the five possible answer choices) will yield the 04 May 2016, 11:37
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Bunuel
What value of x (from the five possible answer choices) will yield the lowest value of the expression ||12−3x|−|15+2x||?

A. 0
B. 1
C. -1
D. -2
E. -3

Make the two operators equate
12-3x =15+2x
or,x=-3/5 =-0.6
Nearest term
Ans c

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What value of x (from the five possible answer choices) will yield the 25 Mar 2022, 17:42
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