exam
Maths Puzzle
Numerical Ability
if 7 is subtracted from twice a number, the result is 5. find the number.
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exam Other Question
Please help me. Simplify:
a) (8^n)(2(^n-2)(4(^n+1)(3^n)/sqrt3^2n
b) (2^x)(8(^x+2)(32(^2x-1)/8^x)(sqrt4^x)
I am to use interval notation for the solution set:
Please help
3x+9=3(x-3)
Here is another one:
3x<9 and 2x+1>3
Thanks, lackinmath