exam
Maths Puzzle
Numerical Ability
2 times one number added to 3 times another number is 54. The second number is 2 less than the first number.
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exam Other Question
use a right triangle to write an expression as an algebraic expression. Assume X is positive and that the given inverse trig function is define for the expression X
sec(cos^-1
For f(x) = 1/x^2 -2x -8, find the interval(s) where f(x) < 0.
possible answers:
(-4,2)
(-2,4)
(2,4)
(2,8)
Pleeze show me. Thank you.