Answer:
the first one i think
Step-by-step explanation:
Notice that both equations contain + 2y so if we subtract the first equation form the second we get:-
8x - 7x + 2y - 2y = 30 - 24
x = 6
Now to find the value of y we substitute for x in the first equation.
7(6) + 2y = 24
2y = 24 - 42
2y = -18
y = -9
So the solution to the system of equations is x = 6 , y = -9 (answer)
Answer:
-2,9
Step-by-step explanation:
Dont want to explain too long
Answer:
the variability of the sample results will be reduced, giving greater precision in the estimate.
Step-by-step explanation:
this worked on edg for me!