exam Maths Puzzle Numerical Ability

2. Solve the system by the substitution method. Determine whether the equations are independent, dependent, or inconsistent. Show your work.

3y - x = 5
-x + 2y = -4

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exam Other Question
Simplify 3^2-5 n=3/5

3(3/5)^2-5
3(9/25)-5
3/1(9/25-5
27/25-5/1
27/25-125/25 = 27-125
= -98 320ml of 30% alcohol soln, convert this to 50% alcohol soln by adding 70% alcohol soln.