Answer:
(x, y)=(4,-8)
Step-by-step explanation:
9x+y=28
3x+3y=-12 /:(-3)
9x+y=28.......(1)
-x-y=4......(2)
9x+y=28
(1)+(2): 8x=32
9x+y=28
x=32/8
9x+y=28
x=4
9*4+y=28
x=4
36+y=28
x=4
y=28-36
x=4
y=-8
x=4
(x, y) =(4,-8)
Answer:
If it takes that 1 hour to have 1 ninth of a page then I would think it takes 27 hours
Step-by-step explanation:
87.5%, eighty seven point 5 percent
Answer:
the line is slanding to the left.
Step-by-step explanation:
Its gradient is negative
i.e y/x
therefore -2/2
=-1
Answer:
10
Step-by-step explanation:
Given
Add these two equations:
Substitute it into the first equation:
Then
