anonymous
  • anonymous
hello i need help,hurry im doing a timed test 4a+7b=-5 8a+4c=36 6b+4c=-14
Mathematics
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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anonymous
  • anonymous
Did you use the calculator provided on this website? is this algebra? what are you trying to do, factoring?
anonymous
  • anonymous
its algebra 2! and no which calculater do i use...its says to solve
anonymous
  • anonymous
the system of equations

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anonymous
  • anonymous
solve by substitution? be specific?
anonymous
  • anonymous
it didnt say.. it just says solve system of equations
anonymous
  • anonymous
if it's Solve by Substitution Method: c=1
anonymous
  • anonymous
according to the calculator provided here.
anonymous
  • anonymous
okay so i plug 1 into all the c's?
anonymous
  • anonymous
a=-7b/4-5/4 b=2c/7-23/7 c=1 according to the calculator provided in this website.
anonymous
  • anonymous
that's if you are trying to Solve by Substitution Method:
anonymous
  • anonymous
your thebest
anonymous
  • anonymous
is it correct?
anonymous
  • anonymous
idk i will find out what about this one it sayswithout graphing classify the following system as independent dependent or inconsistent
anonymous
  • anonymous
2x-y=3 6x-3y=0
anonymous
  • anonymous
according to the calculator provided it is incosistent
anonymous
  • anonymous
okay thanks what about this one it says solve the systems of equattions useing matrix
anonymous
  • anonymous
x+3y=22 2x-y=9
anonymous
  • anonymous
it says x=7, y=5
anonymous
  • anonymous
just go to this website and solve for yourself http://www.freemathhelp.com/algebra-help.html scroll all the way down and you will find the calculator.
anonymous
  • anonymous
i dont understand how to use it help me with one more please
anonymous
  • anonymous
solve the system by elimination 4a+4b-c+=-6 8a+6b+c=-5 6z-4b-6c=-22
anonymous
  • anonymous
on the first equation after c+ then what?
anonymous
  • anonymous
ooops let me write it over its 4a+4b-c=-6
anonymous
  • anonymous
and the last one after the 6 its and a,,im in a hurry :)
anonymous
  • anonymous
you mean this on the last eq. 6z-4b-6a=-22
anonymous
  • anonymous
nooo the last one was 6a-4b-6b=-22
anonymous
  • anonymous
is it Solve by Addition/Elimination Method:?
anonymous
  • anonymous
probably?
anonymous
  • anonymous
if so then the calculator says can't be solve in addition method but on Solve by Gaussian Elimination: its (-11/6, 11/10, 46/15)
anonymous
  • anonymous
ok
anonymous
  • anonymous
thanks what about this one: find the maximum valube of the objective function and the calues of x and y for which it occurs
anonymous
  • anonymous
f=2x+y 3x+5y(less than or greater then sign) 45 2x+4y(less than or greater then sign) 32
anonymous
  • anonymous
hello
anonymous
  • anonymous
helllo

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