Exam
Maths Puzzle
Co-ordinate geometry
If Y varies jointly as X and Z and Y = 60 when X = 10 and Z = -3, what is Y when X = 8 and Z = 15?
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Exam Other Question
Solve
3x^2 - 3x^3 / x^3 - x
The volume (V) of a box varies jointly as the length (l), width (w), and height (h). Find h if V=512m^3, l=8m, and w=4m.