Question

x+y+z=7100
.07x+.10y+.12z=759
-x-y+z=1100

Answer 1

which method

Answer 2

x+y+z=7100
-x-y+z=1100 =2z=8200 z=4100

Answer 3

system of equation

Answer 4

z is correct
now try to solve for x and y, will help u when u get stuck

Answer 5

x+y+4100=7100-4100= x+y=3000

Answer 6

.07x+.10y+.12(4100)=759 ? then thats where i get stuck

Answer 7

.07x+.10y+.12z=759 multiply by 10 then add
-x-y+z=1100

Answer 8

come on amanda u can do it

Answer 9

@Mandy86 did u sleep

Answer 10

yeah but ive been at this all day!

Answer 11

thats y im here for:p

.07x+.10y+.12z=759 multiply everything by 10 what do you get

Answer 12

Thank you I dont know what i would do with you!

Answer 13

you are welcome; now do wat i told u

Answer 14

.7x+y+1.2z=7590

Answer 15

.7x+y+1.2z=7590
-x-y+z=1100

add both equation

Answer 16

great thank you!

Answer 17

6x+2.2z=8690

Answer 18

oh -.3x

Answer 19

wanna double check it before i tell you what you did wrong

Answer 20

-.3x+2.2z=8690

Answer 21

what is z?

Answer 22

2.2?

Answer 23

you solved for it earlier

Answer 24

4100

Answer 25

so i plug it 4100 back in to z

Answer 26

yes

Answer 27

-.3x+2.2(4100)=8690

Answer 28

now solve for x

Answer 29

:D

Answer 30

x=1100

Answer 31

no i plug in x and z in the first equation?

Answer 32

plug in into any equation...the one you love the most lol

Answer 33

to get z

Answer 34

to get y, u have z already

Answer 35

yeah i meant that!

Answer 36

but u didnt write it :p

Answer 37

i know! long day1

Answer 38

hehe how was ur day

Answer 39

long lol and stessful so much homework to do. Hows yours?

Answer 40

y=1900

Answer 41

yay! thank you where are you from?

Answer 42

correct, ohio, u?

Answer 43

Florida!

Answer 44

what are you studying?

Answer 45

College algebra and biology

Answer 46

im in my 4th year of aa degree

Answer 47

u graduating in may?

Answer 48

yes then in fall i start my BA in elementary education!

Answer 49

thats good; i will help u in math if u want, as long as u r trying and willing to learn

Answer 50

I am i enjoying math its just it gets overwhelming.