Because the last equation already has the y eliminated so just need to get the other two to eliminate the y too
multiply 4 to the first equation to eliminate y, and you get
-4x-4y-4z=-32
-4x+4y+5z=7
now get rid of y so all you have left is
-8x+z=-25 (let call this equation #4)
now take equation #3 and #4 together to solve for one of the variables, i’ll solve for z first so i’ll get rid of x by multiply the equation #4 all by 4, you get
8x+8z=16
-8x+z=-25
solve it and get 9z= -9; z=-1
now you have z so take it and ply it into equation #3
2x+2(-1)=4
2x=6; x=3
take both of them, plug it in equation #1
-3-y-(-1)=-8
-y=-6 ; y=6
done so the answer is (x,y,z) = (3,6,-1)
Answer:
if x=6 then y=-55
Step-by-step explanation:
because 41-27 is 14 so u need to subtract 14 from -41 to get ur answer
Answer:
$319.60
Step-by-step explanation:
Find the area of the bathrooms in square feet.
2(7)(8)+4(6)
2(56)+4(6)
112+24
136
Multiply the amount of money per square foot by the total square feet to find your price.
$2.35(136)=$319.6
I’m pretty sure it’s A but I would just work it out to make sure
Answer:
True
Step-by-step explanation:
8 + 5 = 13 + 5 = 18 + 5 = 23.