exam
Maths Puzzle
Numerical Ability
Given the quadratic equation x^2-15=2k(x-4), find k if there are two real and equal roots.
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exam Other Question
solve the following system of linear inequalities by graphing x+2y_<_ 3
2x-3y <_ 6 need a graph for these ones.
solve the system by graphing x-y=5 x+y=3
four hot dogs and soft drink costs $6.30, whereas one hot dog and four soft drinks cost $4.20. What is the total cost of one hot dog and one soft drink