Question

complete the ordered triple
3x+3y+z=1
x-3y+2z=19
8x-2y+3z=34
someone please help

Answer 1

whats this?

Answer 2

you should be a pro by now ;)

Answer 3

there u r, thought so cant figure out what i did wrong

Answer 4

let me do this up in notepad and show you a better view of it....matrix style :)

Answer 5

please

Answer 6

r u still there doesnt usually take you this long

Answer 7

z =-1324/23 is one of them, if I did it right :)

Answer 8

does that sound right to you :)

Answer 9

i have no idea i didnt do the fractions

Answer 10

y = -5931/207

Answer 11

its messy, but lets see if it works in the end :)

Answer 12

i got
x,y,z
2,-3,1

Answer 13

x = 3324/69

Answer 14

does it work what you got?

Answer 15

and of course mathlab says its wrong

Answer 16

dont know i hate fractions so i eliminate them

Answer 17

:) i dont think you can get around it this time

Answer 18

what happen to the superhero genious

Answer 19

can we start from the begining and work the problem

Answer 20

were gonna half to , i messed it up somewhere ;)

Answer 21

ok ready when u r

Answer 22

I got this so far :) and it looks about like what I had the last time...

Answer 23

its confusing its not at all what i got i was doing it the way we were earlier

Answer 24

z = 4 :)

Answer 25

-6x-6y-2z=-2
x-3y+2z=19
add them and u get
-5x-9y=17

Answer 26

yeah, then it gets messy :)

Answer 27

y=-3, z=4

Answer 28

x=2 :)

lets double check it ;)

Answer 29

it just formats better in notepad, and I dont get as lost :)

Answer 30

-9x-9y-3z=-3
8x-2y+3z=34
add them and you get
-x-11y=31

Answer 31

-5x-9y=17
5x+55y=-155
add them together and get
46y=-138
y=-3

Answer 32

3(2)+3(-3)+(4)=1
6 -9 +4 = 1
10-9=1...true

(2)-3(-3)+2(4)=19
2 +9 +8=19
10+9=19.......true


8(2)-2(-3)+3(4)=34
16 +6+12=34
16 +18=34 .......true

(x,y,z)

(2 ,-3, 4)

Answer 33

-x-11y=31
-x-11(-3)=31
-x-33=31
-x=-2
x=2

Answer 34

you got it :) I did the substitution method....I dont get as many errors that way

Answer 35

common "Z" ;)

Answer 36

that didnt work as well as it did in my head :)

Answer 37

you got 2 out of 3.... work the z.. work the z

Answer 38

3x+3y+2=1
3(2)+3(-3)+z=1
6x+-9y+z=1
-3+z=1
z=4

Answer 39

yay!!

Answer 40

my math was off thats how i got z=-1

Answer 41

lol..... my math was waaaayyyyyy off to begin with on this one :) BAD FINGERS!!!!

Answer 42

i forgot how to add i guess

Answer 43

hey, the cavemen lived without it... and we evolved ;)

Answer 44

yeah i think people made up this stuff and had to make it confussing so no one could tell them it was wrong

Answer 45

so when the variables change to a, b, c its the same just different letters

Answer 46

yep.

Answer 47

it dont matter what you name them, they are all just different variables in the end

Answer 48

ok so
6a+3b+c=-20
a-3b+2c=-12
17a-2b+3c=-88

Answer 49

work it out like you did the other one, and let see your moves lol

Answer 50

-12a-6b-2c=40
a-3b+2c=-12
add them together get
-11a-9b=28

Answer 51

good so far...

Answer 52

-18a-9b-3c=60
17a-2b+3c=-88
add them get
-a-11b=-28

Answer 53

-28?

Answer 54

yeah.......

Answer 55

-11a-9b=28
-a-11b=-28

Answer 56

-11a-9b=28
11a+121=308
add them get
112b=336
112(3)=336
b=3

Answer 57

b = 3, I agree

Answer 58

-a-11b=-28
-a-11(3)=-28
-a-33b=-28
-a=-61
a=61

Answer 59

is a right?

Answer 60

-a -33 = -28
-a = -28+33
-a = 5

a = -5

Answer 61

i got that the first time thought -61 was too high

Answer 62

6a+3b+c=-20
6(5)+3(3)+c=-20
30+9+c=-20
c=-59

Answer 63

c looks good :)

Answer 64

double check your answers by plugging these values in your eqautions and see if they work

Answer 65

mathlab says no

Answer 66

not mathlab, the original equations :)

Answer 67

i put my answers into mathlab it said they were wrong

Answer 68

do you have the correct equations? no typos?

Answer 69

a,b,c
5,3,-59

Answer 70

c has got to b wrong

Answer 71

6(5)+3(3)+(-59)=-20
30 +9 -59 = -20
39 - 59 = -20
-20 = -20


(5)-3(3)+2(-59)=-12
5 -9 -118 .....yeah :)
17a-2b+3c=-88

Answer 72

equation 1 is the only won that ckecked out right

Answer 73

-12a -6b -2c =40
a -3b +2c =-12
------------------
-11a -9b = 28

Answer 74

thats what i got so where did i go wrong

Answer 75

(6a+3b+c=-20)-3

-18a -9b -3c = 60
17a -2b +3c =-88
------------------
-a -11b =-28 ....good

Answer 76

(-a -11b =-28 )-11

11a +121b = 308
-11a - 9b = 28
------------------
112b = 336

b = 3

Answer 77

-11a - 9(3) = 28
-11a = 28+27
-11a = 55

a = -5

Answer 78

-5 -3(3) +c =-12
-5-9 +c = -12
-14 + c = -12
c = -12+14
c = 2

Answer 79

ok hold on thats way different then what i got

Answer 80

6a+3b+c =-20
a-3b+2c =-12

17(-5)-2(-3)+3(2) =-88
-85 +6 +6 that aint working either....

Answer 81

ow my brain hurts.....

Answer 82

dont quit on me now

Answer 83

do substitution......less error :)

Answer 84

doing it on paper :)

Answer 85

doing it on paper :)

Answer 86

a=-5

Answer 87

(a,b,c)

(-5,3,1)

Answer 88

yeah thats what i just got

Answer 89

forgot to multiply by -1 to get a

Answer 90

and I had it, but missed that "2"c....which threw me lol

Answer 91

i still got 8 more and another page to do gonna b a long night for me

Answer 92

:) post another question on the left if you need to, this ones a bit long :)