The question comprises two numbers and a letter - possibly a variable - followed by a question mark. There is no indication as to how the numbers relate, if at all, with the letter. Nor is it possible to tell what the question is about.
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About 15.87% of people have an IQ over 115.z=(115-100)/15=1Z-score of 1 on a normal distribution means 84.13% have an IQ below 115 and 15.87% have an IQ above 115.IQ Graphhttp://8.17.172.75/uiq/images/bellcurve.gif
sin(z)= (e^(i*z)-e^(-i*z))/(2*i) where i=(-1)^(1/2)
Z2 - 5Z + 4 = 0 (Z- 1)(Z - 4) so, Z = 1 ---------- and Z = 4 -----------
y * (x-1) = z Express as x,divide both sides by y(x - 1) = z/yadd 1 on both sidesx = z/y + 1
(1/x) - (1/y) = (1/z) Get the left-hand side over a common denominator:- (y-x)/xy = 1/z Take the reciprocal of both sides:- z = xy / (y-x)