exam
Maths Puzzle
Numerical Ability
cot x -tan x = 2
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exam Other Question
Does the systems {2x=5y=6 have a unique solution, no solution or many
{x=2.5y=3
solutions? What does this mean graphically?
Helen Weller invested $15,000 in an account that pays 10% simple interest. How much additional money must be invested in an account that pays 13% simple interest so that the averag