exam Maths Puzzle Numerical Ability

) Statistics. A survey of 400 people found that 66 were left-handed. What percent of those surveyed were left-handed?

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exam Other Question

Which equation represents a line whose x-intercept is the solution to the equation -3/4x+1/2=0

Answer Choices:

A) 3x+4y=2
B) 3x+4y=-1/2
C) 4x+3y=2
D) y=-3/4x-1/2
find all the zeros for f(x)=x^3 - 19x - 30