sheet me don't know my friend
They both are solutions.
If you plug the numbers from the ordered pairs in for x and y you will see that they equal 11.
3(3) - (-8/4) = 9 + 2 = 11
3(4) - (4/4) = 12 - 1 = 11
Answer:
5/2 is the answer......
Step-by-step explanation:
Hope it helps......
The system is
i)

ii)

The solutions to this system, are all points (x, y) for which BOTH these 2 inequalities hold.
Check the points separately:
(5, 1)
i)

True
ii)

Not True
(0, 0)
i)

True
ii)

True
(-2, -3)
i)

True
ii)

True
(2, 5)
i)

Not True
ii)

Not True
Answer: (0, 0) and (-2, -3)
Let <em>x</em> be the amount of salt in the solution.
At day's end, the concentration of salt in the beaker is
<em>x</em> / (4 L) = 0.08 = 8%
Solve for <em>x</em> to get
<em>x</em> = 0.08 (4 L) = 0.32 L
So at the beginning, the concentration of salt in the beaker was
(0.32 L) / (5 L) = 0.064 = 6.4%