l2a+1l=1

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that is better this is an absolute value equation so it requires solving two separate equations
one is just what you see as if the absolute value signs are not there \[2a+1=1\] which you can solve in two easy steps
the other is what you get when you change the sign of the number on the right, i.e \[2a+1=-1\] again two easy steps to solve

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Other answers:

so you pretend the absolute value sign is not there?
for one of them yes, but you have to solve two all together
so lets go ahead and solve them start with \[2a+1=1\] and subtract 1 from both sides, what do you get?
you get 2a=0
right which means \(a=?\)
0?
yes ! now on to the next equation
the next one is \[2a+1=-1\] again subtract 1, what do you get?
2a=-2
right, and now divide by 2
A=-1
yes lets recap
if you have an absolute value equation like \[|2x+3|=5\] you have to solve two equations:\[2x+3=5\] and also \[2x+3=-5\]
so on a graph it would look like |dw:1439951388453:dw|
those two numbers, yes
okie tysm
btw the reason you were getting lots of confusion was because they thought you were asked to solve \[12a+11=1\]
yw
oh lol ic
can u help me with another question?
sure
as long as it is not statistics or geometry
yeah no its not
-3a+4=-14
no absolute values this time right?
no
a) subtract 4 from both sides what do you get?
-3a=-18
ok good now divide both sides by \(-3\)
a=6
bingo
omg tysfm ur so smart
lol you are quite welcome
i suck at math xD
actually you do not
most people have trouble at this level with the signed number arithmetic you do not if you are comfortable with that, you can do all these btw you did them mostly yourself
can i ask u some more questions?
shoot
twelve is added to the product of a number and 5. the result is -3. find the number
ok here we need to translate in to math product means multiply
so we pick a variable, or rather you pick one that will be "a number"
x
lol you have no imagination, i would have picked \(\xi\) but we will use \(x\)
xD
the "the product of a number and 5" will translate as \(5x\)
idky but ur making me want 2 actually learn
imagine!
now we add\(12\) to \(5x\) to get what?
5x+12? or 17x?
first one
okay
\[5x+12x=17x\] but \[5x+12=5x+12\]
now you are told that this give you \(-3\) so final job is to solve \[5x+12=-3\] takes two steps
subtract 12 witch gives u 5x=-15
yup next?
then divide 5 and u get x=-3
ok i guess you are really not so "bad at math" after all
lool
at least not as bad as i was
u used 2 be bad at math?
im shocked
look, it is not like you are born knowing this you have to practice is all
ic ic
you got more, or are you done?
i have a few more
go ahead and ask if you want, or try them and ask btw who does homework in the middle of august?
its a summer packet
kk get you ready for fall
julie cashed a paycheck and repaid her brother $10 that she had borrowed from him. she then spent $30 on fuel for her car and half of the remaining money on a new tent for camping.she bought a pair of running shoes for $29.45 and had $17.75 left. how much did julie receive when she cashed her paycheck
wow
so much typing my fingers hurt
guess we need a variable again guess we can recycle \(x\) as the amount of her original paycheck
i needa finsh this by 2day so my dad can unblock vantage smh
lolol!!!
fantage*
this is so laggy i have 2 keep refreshing
yeah i see that too
ok lets start with the amount cashed as \(x\) and start spending money
first spent $10 so has \(x-10\) left then spend another 30 so what is left now?
x-40?
right now here comes the confusing part
she spends half of that next, in other words half of \(x-40\) do you know what that is?
um 20?
you forgot to take half of \(x\)
so x-20?
you know, i have a much much better idea, lets approach this from a different way
okay
start at the end, and work backwards
julie cashed a paycheck and repaid her brother $10 that she had borrowed from him. she then spent $30 on fuel for her car and half of the remaining money on a new tent for camping.she bought a pair of running shoes for $29.45 and had $17.75 left. how much did julie receive when she cashed her paycheck
at the end she had \(17.75\) before that she spent \(29.45\) so how much did she have before spending the 29.45?
in other words, what is \(17.75+29.45\)?
47.20
yeah that is what i get
that is the "half the remaining money" so she had twice this amount before buying the stupid tent how much is twice 47.20?
94,40
i mean 94.40
yeah right both times
now add the reaming two amounts she spent
134.40
looks reasonable
it is nice to do algebra without variables in math it is called "arithmetic"
lol
i have 4 more questions do u still wanna help me with them?
sure
$15 per answer
$25 for correct ones
just kidding, go ahead lets see them
im poor asf
lmfao
okay
|dw:1439953689890:dw|
man is that ugly
lmfao fr
thats a 0 not a d js
add \(C\) to both sides, which really just means write it
\[\frac{A}{B}x=D+C\] in other words
oh ic ic
then multiply both side by the "reciprocal" of\(\frac{A}{B}\) which is \(\frac{B}{A}\) USE PARENTHESES !!
by which i mean put parentheses about the \(D+C\)
so \[\frac{ b }{ a } *\frac{ a }{ b }=(d+c)\frac{ b }{ }\]
\[\frac{ b }{ a }\] *
something like that
\[\huge x=\frac{b}{a}(c+d)\] looks somewhat more professional
lol okay ty
yw
3 more until fantage?
mhm
state whether the percent of change is a percent of increase or a percent of decrease. then find the percent of change. original:55 new:44
you tell me is going from 55 to 44 an increase or a decrease?
decrease
ok so we got that out of the way now lets compute the difference what is \(55-44\)?
11
ok now compare to the original amount of 55 by division,i.e compute \[\frac{11}{55}\]
0.2?
right, and now turn it in to a percent by moving the decimal two place to the right
20% decrease
?
yes
two more
wow okay
a clown is preparing for a party by inflating one ballon for every invited guest. just when she has half of the necessary gallons inflated, 3 of them pop. she inflates 5 more balloons, and 2 go pop. then 6 balloons are carried away by the wind. she finishes by inflating 16 more balloons, and then learns that only 12 guest will attend the party. how many extra balling did the clown inflate
???
huh?
a clown is preparing for a party by inflating one ballon for every invited guest. just when she has half of the necessary gallons inflated, 3 of them pop how many were originally invited? btw i assume gallons means balloons
ballons not balling lmfao
and yea ballons
omg autocorrect
a clown is preparing for a party by inflating one balloon for every invited guest. just when she has half of the necessary balloons inflated, 3 of them pop. she inflates 5 more balloons, and 2 go pop. then 6 balloons are carried away by the wind. she finishes by inflating 16 more balloons, and then learns that only 12 guest will attend the party. how many extra balloons did the clown inflate
sorry for the misspelling
i think either there is not enough information or your answer has to have a variable in it
since we don't know how many guests were invited originally, we have no idea how many extra there are but we can write something i suppose
or we can assume that the number is 12 to begin with
lets say she starts with half of 12, which is 6 balloons
3 pop, how many left?
3
inflates 5 more now how many?
??
report you? i don't even know you!
i dont report, i just ban bye
8
ok now 2 pop how many left?
6
now 6 get carried away how many now?
nuffin
right
then inflates 16
i feel bad for the clown
which is 4 more than the 12 needed
not a good job i imagine
lol
brand new??!!
okay the last one has 2 do with geometry
not so good at that
okay ill do that one on with my brother he's good at math
ok good luck !!
okie tysfm for everything
you are quite welcome see you again some time i am sure
lol yea buh byez

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