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Maths Puzzle
Numerical Ability
AN octagon has eight sides of varying lengths. What is the sum of the measures of its interior angles?
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1)simplify root 5xy^5* root 10x^3
2) If f(2)=0 and f(x)=3x^2+kx-4, find k
3) if g(x)=3x^2+2x+6 and f(x)=4x-5, find g(2)/f(5)
4)if h(x)=13-5x,find h(x+5)
express as the cofunction of a positive acute angle not using a calculator of sin 340 degress.
