Question

Solve: |3r - 12| = 0
Answer

{-4, 4}

{0, 4}

{0, -4}

{4}

Answer 1

which one of the options gives result of zero?

Answer 2

does r = -4 ?

Answer 3

YEs?

Answer 4

mod(3(-4) - 12) = mod(-24) = 24

Answer 5

i used mod as i cant find the vertical lines on my keyboard

Answer 6

its {4}

Answer 7

do this: I 3r-12 I=0
+12 +12
I 3r I=12
/3 /3 ------>this will give you I r I =12/3 which is 4 so (r=4)