20. put the following numbers in order from least to greatest.
5/8,-0.6,0.6,3/5,-2/5

-0.6, -0.4, 0.6, 0.6, 0.625

Step-by-step explanation:

first make them all decimals

5/8 = 0.625

-0.6

0.6

0.6

-0.4

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.