Factorize x^2 - 5x +4
i will mark brainliest if correct

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Pls never taught i’m really confused and i rlly need

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.