anonymous
  • anonymous
https://static.k12.com/bank_packages/files/media/mathml_59e732620eccd4d781c66434c69af2cebda3780a_1.gif is this equation: A. identity B. contradiction C. neither
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
i think maybe it is either a or b, not c for sure
anonymous
  • anonymous
@jim_thompson5910
jim_thompson5910
  • jim_thompson5910
what do you get when you distribute

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anonymous
  • anonymous
u get a? i dunno i am confused on this
jim_thompson5910
  • jim_thompson5910
forget about the options right now
anonymous
  • anonymous
ok
jim_thompson5910
  • jim_thompson5910
6(2x-3) is equivalent to what?
anonymous
  • anonymous
12x-18
jim_thompson5910
  • jim_thompson5910
ok do the same for the right side
anonymous
  • anonymous
oh u get 9x-15 correct?
jim_thompson5910
  • jim_thompson5910
yep
jim_thompson5910
  • jim_thompson5910
we now have 12x - 18 = 9x - 15
anonymous
  • anonymous
now what?
jim_thompson5910
  • jim_thompson5910
are you able to isolate x?
anonymous
  • anonymous
yes
jim_thompson5910
  • jim_thompson5910
tell me what you get
anonymous
  • anonymous
ok
anonymous
  • anonymous
well x=1
anonymous
  • anonymous
oh oh oh so the answer is a
jim_thompson5910
  • jim_thompson5910
yes so there is exactly one solution (which is x = 1)
jim_thompson5910
  • jim_thompson5910
it's only an identity if both sides are the same example `x = x` or `2x+3 = 2x+3` identities are equations that have infinitely many solutions
anonymous
  • anonymous
oh ok my bad
anonymous
  • anonymous
i know for a fact c is not correct so the real answer must be b
jim_thompson5910
  • jim_thompson5910
why isn't C correct?
anonymous
  • anonymous
because it is neither contradiction or identity and we both know that a is not correct
anonymous
  • anonymous
and i know that a or b must be it, but offcourse, a is wrong so the answer is b
jim_thompson5910
  • jim_thompson5910
why is it a contradiction? a contradiction is something that has no solutions at all
anonymous
  • anonymous
what?!
jim_thompson5910
  • jim_thompson5910
example of a contradiction `2x + 3 = 2x + 5`
anonymous
  • anonymous
i though contradiction means it has one solution
jim_thompson5910
  • jim_thompson5910
no
anonymous
  • anonymous
aw shucks
jim_thompson5910
  • jim_thompson5910
contradiction is something that has no solutions
anonymous
  • anonymous
oops my bad
anonymous
  • anonymous
i guess the answer is c then...
jim_thompson5910
  • jim_thompson5910
` 2x + 3 = 2x + 5` simplifies to `3 = 5` which is always false there are no x values that make the equation true. So there are no solutions
anonymous
  • anonymous
OH I GET It!!!
phi
  • phi
another way to think of it: identity means left side = right side no matter what x is (it works for all x values) contradiction means left side never equals right side (no x value works)

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