Which of the following is the correct formula to calculate the constant of proportionality (aka Constant of variation)?

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.

my acc plz

step-by-step explanation:

i believe the answer is d.

hope it you! : d

so, converting firstly the mixed fractions to improper fractions and then "adding".