What is the circumference of a circle with a diameter of 30

Which is the completely factored from of xy^3-x^3y

Which statement is true about the discontinuities of the function f(x) = x-5/ 3x^2-17x-28

The random variable x has probability density function f (x) = k(−x²+5x−4) 1 ≤ x ≤ 4 or =0 1 show that k = 2/9 find 2 e(x), 3 the mode of x, 4 the cumulative distribution function f(x) for all x. 5 evaluate p(x ≤ 2.5). 6 deduce the value of the median and comment on the shape of the distribution.