sarah earns £12 per week babysiting. She spends 2/5 on magazines and 3/8 going to the cinema. How much does she spend on magazine's and the cinema altogether?

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed