Hmm
what you do is try to eliminate 1 variable in 2 equaions first
we can elminate x's in first and 2nd equation
add first and 2nd equation
x+3y-2z=10
<u>-x-2y+z=-7 +</u>
0x+y-z=3
y-z=3
multiply 2nd equation by 3 and add to last one
-3x-6y+3z=-21
<u>3x+9y-5z=28 +</u>
0x+3y-2z=7
3y-2z=7
we now have
y-z=3
3y-2z=7
multiply first equation by -2 and add to 2nd
-2y+2z=-6
<u>3y-2z=7 +</u>
y+0z=1
y=1
now we can sub back
y-z=3
1-z=3
minus 1
-z=2
times -1
z=-2
sub baack into any equation
x+3(1)-2(-2)=10
x+3+4=10
x+7=10
minus 7
x=3
x=3
y=1
z=-2
(3,1,-2)
Answer:
2114 is not a prime number because you can divide to 7. Prime number mean is the prime number is the number that can be divided by the number it self
The Answer is $9.00 because if you just add 4.50 to 4.50 it is $9:00.
Answer:
Reduction
Step-by-step explanation:
so, the blue shape's letters are E, F, G, H and I.
the green shape's letters are E', F', G', H', and I'.
the letters with the ' are the ones that are after the origianal.
:) hope i helped
