exam
Maths Puzzle
Numerical Ability
Problem: x^2+7x=1
This is the answer I got, is it correct?
x = -7/2 ±√53/2
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exam Other Question
When a parallel circuit has only two branches, the equivalent resistance of the circuit is given by the following:PV = 120000(1 + 0.05)with an exponent of 5
My answer is PV = 120000(1.25) PV =150000 Is this correct?
w-4/3w ÷ 2w-8/9w