Question

Solve.

–3|s| = 18

A.
s = –6 or s = 6

B.
no solution

C.
s = 6 only

D.
s = –6 only

Answer 1

i just dont know if i shoud choose a or c

Answer 2

it's a

Answer 3

-6

Answer 4

if you wan't to check for yourself, just divide. 18 divided by -3 = -6

Answer 5

how about you show us how you would solve it so we know what part you're not able to grasp fully

Answer 6

i think i did this wrong i didn't see the bottom it's D

Answer 7

only -6 because 6*-3 is -18

Answer 8

the absolute value is a little tricky, it is a piece-wise defined function
that is when it is less than zero, and when it is greater than or equal to zero
therefore,
-3|s| = 18 means
-3s = 18 AND -3 (-s) = 18

Answer 9

but the 18 is positive not negative

Answer 10

i know, that's why it's only -6

Answer 11

do not listen to @scortlewabermop he's not sure what he is doing yet.

Answer 12

2 negative number times eachother equal a posittive

Answer 13

ok

Answer 14

so it is d then

Answer 15

NO! that IS ABSOLUTELY WRONG

Answer 16

ok

Answer 17

haven't you been reading my post? :P
-3|s| = 18 means
-3s = 18 AND -3 (-s) = 18

Answer 18

i have been reading them i just dont understand them completly

Answer 19

-3|s| = 18 means
-3s = 18 AND -3 (-s) = 18
solve for s individually, this means you will have two values for s

Answer 20

sorry i'm a still asleep sorry

Answer 21

so a

Answer 22

why would be a? did you solve for s?
what if those values are not correct?

Answer 23

nevermind

Answer 24

I don't want to leave this thread without you understanding the concept of absolute values

Answer 25

if i did it right the answer is C

Answer 26

where is your solution?

Answer 27

how i did the equation?

Answer 28

on how you solved and got C

Answer 29

I just want to see so I can walk you through the steps if there's something wrong

Answer 30

-3 * (-6) =18 would be how i didnt get c because i skimmed through my answers and forgot it was -6

Answer 31

so your s = -6 only?

Answer 32

yeah if i did positive six it would be -18

Answer 33

you're half correct

Answer 34

half?

Answer 35

yes. HALF :)

Answer 36

How am i half correct then?

Answer 37

because we do not know if s' value is greater than or equal to zero OR less than zero

Answer 38

What did you come up with?