A. c>20
b. c ≥20
c. c= 20
d. c ≤ 20

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 1: 45 am

step-by-step explanation:

its that because if it was in the pm it would be 1345

step-by-step explanation:

compare