exam
Maths Puzzle
Numerical Ability
Please help with this problem:
Find all zeros of f: f(x) = 3x^2 + 5x - 2
I believe you use the quadratic formula to solve or do I need to factor?
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exam Other Question
a sample of 20 is selected from the population. What is the number of degrees of freedom used to determine the appropriate critical t-value?
A) 20
B) 19
C) 21
D) 25
E) None of the above
Will you help me with substitution?
y=4x
3x-y=1
and
-3x+5y=81
2x+y=24