exam
Maths Puzzle
Numerical Ability
what is 3x-2+4/x -[6]=2 waht is the value of y
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exam Other Question
One grade of oil has 0.50% of an additive, and a higher grade has 0.75% of the additive. How many liters of each must be used to have 1000L of a mixture with 0.65% of the additive?
Use substitution to solve each system of equations. If the system does not have exactly one solution, state whether it has no solution or infinitely many solutions.
2x-y=-4
-3x+y=-9