hello i need help,hurry im doing a timed test
4a+7b=-5
8a+4c=36
6b+4c=-14

Question

anonymous · Answer

Did you use the calculator provided on this website? is this algebra? what are you trying to do, factoring?

anonymous · Answer

its algebra 2! and no which calculater do i use...its says to solve

anonymous · Answer

the system of equations

anonymous · Answer

solve by substitution? be specific?

anonymous · Answer

it didnt say.. it just says solve system of equations

anonymous · Answer

if it's Solve by Substitution Method: c=1

anonymous · Answer

according to the calculator provided here.

anonymous · Answer

okay so i plug 1 into all the c's?

anonymous · Answer

a=-7b/4-5/4
b=2c/7-23/7
c=1
according to the calculator provided in this website.

anonymous · Answer

that's if you are trying to Solve by Substitution Method:

anonymous · Answer

your thebest

anonymous · Answer

is it correct?

anonymous · Answer

idk i will find out what about this one
it sayswithout graphing classify the following system as independent dependent or inconsistent

anonymous · Answer

2x-y=3
6x-3y=0

anonymous · Answer

according to the calculator provided it is incosistent

anonymous · Answer

okay thanks what about this one it says solve the systems of equattions useing matrix

anonymous · Answer

x+3y=22
2x-y=9

anonymous · Answer

it says x=7, y=5

anonymous · Answer

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 · Answer

i dont understand how to use it
help me with one more please

anonymous · Answer

solve the system by elimination
4a+4b-c+=-6
8a+6b+c=-5
6z-4b-6c=-22

anonymous · Answer

on the first equation after c+ then what?

anonymous · Answer

ooops let me write it over
its 4a+4b-c=-6

anonymous · Answer

and the last one after the 6 its and a,,im in a hurry :)

anonymous · Answer

you mean this on the last eq. 6z-4b-6a=-22

anonymous · Answer

nooo the last one was
6a-4b-6b=-22

anonymous · Answer

is it Solve by Addition/Elimination Method:?

anonymous · Answer

probably?

anonymous · Answer

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 · Answer

ok

anonymous · Answer

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 · Answer

f=2x+y
3x+5y(less than or greater then sign) 45
2x+4y(less than or greater then sign) 32

anonymous · Answer

hello

anonymous · Answer

helllo