In order to determine er pulse rate, junes nurse counted 18 beats inher pulse in 15 seconds. at that rate, how many beats would she havein 60 seconds

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.