Answer:
The solution to the system of equations is

Explanation:
Giving the system of equations:

To solve this, we need to first of all eliminate one variable from any two of the equations.
Subtracting (2) from twice of (1), we have:

Subtracting (3) from 3 times (1), we have

From (4) and (5), we can solve for y and z.
Subtract 5 times (5) from 3 times (4)

Using the value of z obtained in (5), we have

Using the values obtained for y and z in (1), we have
Answer:
1/2
Step-by-step explanation:
y = kx
where k is the constant of proportionality
y = 1/2 x so k= 1/2
Answer:
750
Step-by-step explanation:
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