exam
Maths Puzzle
Numerical Ability
I need find the inverse of the following function:
f(x)=2(x+12).
This is not from a test
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exam Other Question
Multiply and simplify
y2-x2 . x+y
------- --------
x2+2xy+y2. x-y
the x2 and y2 are xsquared and y squared
thank you
helen has $1.35 in her bank in nickels and dimes. there are 9 more nickels than dimes. find the number she has of each coin.
(can you help me with this problem?)