anonymous
  • anonymous
WILL FAN AND MEDAL I need help with the equation 22=-5(3k+1) I have tried solving for k but I cant figure it out
Algebra
chestercat
  • chestercat
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Mehek14
  • Mehek14
do you know how to distribute?
anonymous
  • anonymous
YES
Mehek14
  • Mehek14
then distribute -5(3k+1)

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anonymous
  • anonymous
IT BE 15K-5
♪Chibiterasu
  • ♪Chibiterasu
Now isolate K.
Mehek14
  • Mehek14
-5 * 3k = -15
Mehek14
  • Mehek14
-15k*
Mehek14
  • Mehek14
you forgot the negative sign
anonymous
  • anonymous
WHAT!!
anonymous
  • anonymous
22=-15k-5 27=-15k
anonymous
  • anonymous
like dat foh
Mehek14
  • Mehek14
\(\bf{22 = -15k - 5}\) add 22 + 5 = 27 \(\bf{27=-15k}\) now divide
anonymous
  • anonymous
HOW DO YOU ISOLATE THE VARIABLE
anonymous
  • anonymous
divide
Mehek14
  • Mehek14
move everything to one side and keep the variable on the other
♪Chibiterasu
  • ♪Chibiterasu
You have to cancel out the values on one side. To remove the -5 you add 5 to both sides which will not change the value of the equation.
♪Chibiterasu
  • ♪Chibiterasu
Doing this gives you the value of the unknown variable.
Mehek14
  • Mehek14
since -15k = -15 x k you will divide 27/-15 and -15 x k / -15 that cancels out -15 on the right side leaving you with 27/-15 = k divide that to get your answer
anonymous
  • anonymous
SO ITS -1.8
Mehek14
  • Mehek14
yes
Mehek14
  • Mehek14
k = -1.8
♪Chibiterasu
  • ♪Chibiterasu
Yeah. And if you want to make sure then you can input -1.8 into the equation and solve.
anonymous
  • anonymous
i WISH I COULD GIVE YOU ALL MEDALS
anonymous
  • anonymous
OOOOHHHH I FORGOT THANK YOU
Mehek14
  • Mehek14
yw ^_^
anonymous
  • anonymous
Mehek14 go to another question in algebra so i can give you a medal
♪Chibiterasu
  • ♪Chibiterasu
ARe you sure it isn't 32 and not 22?
♪Chibiterasu
  • ♪Chibiterasu
Because when I plug in the value I get 32.
anonymous
  • anonymous
its 22 im sure i have the paper right here
♪Chibiterasu
  • ♪Chibiterasu
22 = -5(5.4 + 1) 22 = -5(6.4) 22 = -32
Mehek14
  • Mehek14
you did it wrong chibiterasu :P
♪Chibiterasu
  • ♪Chibiterasu
I'm so stupid.
♪Chibiterasu
  • ♪Chibiterasu
Yeah thats right.
Mehek14
  • Mehek14
\(\bf{22=-5(3*-1.8+1)\\22=-5(-5.4+1)\\22=-5(-4.4)\\22=22}\)
♪Chibiterasu
  • ♪Chibiterasu
Yeah I got 6.4 and not 4.4 because I mixed up the value sign. WOOPS

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