anonymous
  • anonymous
Help!with proof :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1370912734284:dw| Statement Reason 1)m
anonymous
  • anonymous
|dw:1370913239861:dw|
anonymous
  • anonymous
@jim_thompson5910

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jim_thompson5910
  • jim_thompson5910
why is m
anonymous
  • anonymous
i was think angle addition postulate??
anonymous
  • anonymous
that cant be it
jim_thompson5910
  • jim_thompson5910
yes that is
jim_thompson5910
  • jim_thompson5910
angles 1 and 2 add to APC
anonymous
  • anonymous
Ok i see that
jim_thompson5910
  • jim_thompson5910
ok so that's the reason for #2 what's the statement for #3?
anonymous
  • anonymous
im thinking m
jim_thompson5910
  • jim_thompson5910
good
jim_thompson5910
  • jim_thompson5910
actually sry
jim_thompson5910
  • jim_thompson5910
it should be BPD
anonymous
  • anonymous
ooh ya that's what i ment
jim_thompson5910
  • jim_thompson5910
now how do we get m<1+m<2=m<2+m<3
anonymous
  • anonymous
im think addition property
jim_thompson5910
  • jim_thompson5910
no
jim_thompson5910
  • jim_thompson5910
go back to what you are given
jim_thompson5910
  • jim_thompson5910
m
anonymous
  • anonymous
im not suree does it has something to do with addion
jim_thompson5910
  • jim_thompson5910
actually it's substitution
jim_thompson5910
  • jim_thompson5910
you're given m
jim_thompson5910
  • jim_thompson5910
we just found out that m < APC = m < 1 + m < 2 (angle addition postulate) m < BPD = m < 2 + m < 3 (angle addition postulate) --------------------- so... m
jim_thompson5910
  • jim_thompson5910
or you can just do all the substitutions in one step (instead of 2)
anonymous
  • anonymous
Ok now i see who you get that
jim_thompson5910
  • jim_thompson5910
whats next
anonymous
  • anonymous
im thinking m
jim_thompson5910
  • jim_thompson5910
no
jim_thompson5910
  • jim_thompson5910
that is true though (just not useful)
anonymous
  • anonymous
Ok so now im thinking m
jim_thompson5910
  • jim_thompson5910
that's essentially what you're trying to prove, so you can't use it as part of your evidence
jim_thompson5910
  • jim_thompson5910
otherwise, you're using circular logic
anonymous
  • anonymous
am i eave close?? could you give me a hint LOL
jim_thompson5910
  • jim_thompson5910
lol start with m < 1 + m < 2 = m < 2 + m < 3
jim_thompson5910
  • jim_thompson5910
what can be cancelled out?
jim_thompson5910
  • jim_thompson5910
remember all these steps are connected and are building up to the answer
anonymous
  • anonymous
so <1=m<3
jim_thompson5910
  • jim_thompson5910
correct, why?
anonymous
  • anonymous
hold on you are on step ahead
jim_thompson5910
  • jim_thompson5910
true, i tend to do that a lot
anonymous
  • anonymous
it ok LOL
anonymous
  • anonymous
i need to find the statement and reason after m<1+m<2=m<2+m<3
jim_thompson5910
  • jim_thompson5910
well the statement is m < 1 = m < 3 you got that already
jim_thompson5910
  • jim_thompson5910
the reason is __________
anonymous
  • anonymous
simplify?
jim_thompson5910
  • jim_thompson5910
what are you doing to m < 2
jim_thompson5910
  • jim_thompson5910
you are _______ both sides
anonymous
  • anonymous
multiplying
jim_thompson5910
  • jim_thompson5910
no
jim_thompson5910
  • jim_thompson5910
what undoes addition?
anonymous
  • anonymous
ooh subtraction
jim_thompson5910
  • jim_thompson5910
yep subtractive property of equality (or additive property of equality since you can add negatives to both sides)
jim_thompson5910
  • jim_thompson5910
subtractive property of equality: if a = b, then a-c = b-c
jim_thompson5910
  • jim_thompson5910
additive property of equality: if a = b, then a+c = b+c
anonymous
  • anonymous
ok i still have a step missing
jim_thompson5910
  • jim_thompson5910
show me your updated table so far
anonymous
  • anonymous
Statement Reason 1)m
jim_thompson5910
  • jim_thompson5910
statement 5 should be m < 1 = m < 3 the reason is either the subtractive property of equality or the additive property of equality
jim_thompson5910
  • jim_thompson5910
the reason for #6 should be the symmetry property of equality
jim_thompson5910
  • jim_thompson5910
the symmetric property says that if x = y, then y = x
jim_thompson5910
  • jim_thompson5910
also in #2, change "property" to "postulate" I guess it's not that big a deal, but your teacher will probably want this exact wording
anonymous
  • anonymous
is m<1=m<3 the same as <3=m<1 just want to make sure
jim_thompson5910
  • jim_thompson5910
yes and this is true because of the symmetric property of equality
anonymous
  • anonymous
ok i didn't understand that thanks for clearing it up :)
jim_thompson5910
  • jim_thompson5910
So your full and completed proof table would look like this Statement Reason 1)m
anonymous
  • anonymous
Yup i got i cant thakn you enough for the help :)
jim_thompson5910
  • jim_thompson5910
actually...it should be this Statement Reason 1)m
jim_thompson5910
  • jim_thompson5910
notice how there are no m's before the angle markers in line 7 (statement 7)
jim_thompson5910
  • jim_thompson5910
seems silly I know, but m < 1 means "measure of angle 1" while <1 means "angle 1" and the two are completely different
anonymous
  • anonymous
ooh i did not kn othat i will have to do that thatnks again for the help
jim_thompson5910
  • jim_thompson5910
you're welcome

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