exam
Maths Puzzle
Numerical Ability
How do you find what w is in this problem :
39-12w=7-16w
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exam Other Question
48: Solve this system:
y = 2x - 3
x + 2y = 14
trig identities- i need help proving that this identity is true
(sin2x/ 1+cos2x) * (cosx/1+cosx) = tan(x/2)