SOLUTION: 1.) solve the following system by elimination 2x-4y=7 x-y=9 2.) the sum of two intergers, a and b (a>b), is 1,000. the smaller minus the larger is -746. f

Question 60976: 1.) solve the following system by elimination
2x-4y=7
x-y=9

2.) the sum of two intergers, a and b (a>b), is 1,000. the smaller minus the larger
is -746. find the value of the intergers a and b.
3.) factor completely.
(a) w^3 - 1,000
(b) (w - x)^3 + z^3
4.) factor completely.
c^2 - 1
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
x-y=9 or x=y+9 then
2(y+9)-4y=7
2y+18-4y=7
-2y=7-18
-2y=-11
y=-11/-2
y=5.5 solution
then
x=5.5+9
x=14.5 solution
proof
2*14.5-4*5.5=7
29-22=7
7=7
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