Show that the first order differential equation dy dx = y x f(xy) can always be transformed into a separable equation (sep) for any continuous function f(t) of one variable.

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?

What is the benefit of converting measures in a ratio to the same unit