exam Maths Puzzle Numerical Ability

If the mesurement of ABD = x to the power of 2 plus 3 and the mesurment of CDB = 4x plus 5, Find x.

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exam Other Question

32^(-4/5) Find an equation for line with y-intercept 3 that is perpendicular to the line y=(2/3)x-4.
posible answer

a.2y=6-3x
b.2y=3x+6
c.3y+9- 2x
d.3y=2x+9

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