exam
Maths Puzzle
Numerical Ability
At a lumber company, shelves are sold in 4 wood types, 3 different lengths and 3 differents widths. How many different types of shelves could be ordered?
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exam Other Question
Solve the following system of linear inequalities by graphing.
x - 2y >= 4
x <= 4
Use a special product formula to factor the perfect square trinomial.
81x^2-108x+36