The ratio of boys to girls in a class is 5:3. Find the probability of selecting at random, a girl from the class

\(\begin{array}{c|c} x & 1 & 4 & p \\ \hline y & 0.5 & 1 & 2.5\end{array}\). The table above satisfies the relation y = k\(\sqrt{x}\), where k is a positive constant. Find the value of K.

\(\begin{array}{c|c} x & 1 & 4 & p \\ \hline y & 0.5 & 1 & 2.5\end{array}\). The table below satisfies the relation y - k\(\sqrt{x}\), where k is a positive constant. Find the value of P,

What must be added to x² - 3x to make it a perfect square?

Given that (2x - 1)(x + 5) = 2x² - mx - 5, what is the value of m