exam
Maths Puzzle
Numerical Ability
For what value of E does the point (1, 2, -1) sit on the curved surface governed by S(x, y) = x^2 - 3y^2 + 4x - Ey + 6?
a. -1
b. 0
c. 1
d. 3½
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exam Other Question
It takes Tom 3 hours less to paint a fence than Jim. If the two boys work together, they can paint the fence in 2 hours. How many hours would each boy, working alone, need to paint the fence?
write as a single logarithm
2loga (5x^3)- loga (2x+3)