Add (3 - 5i) + (-2 + 8i). sum of real parts: sum of imaginary parts: i

The correct answer is 1 + 3i.

In order to get the answer to this, only add like terms. Add first the constants in the front.

3 + -2 = 1

Now add the imaginary terms

-5i + 8i = 3i

Then you can put the two together as a term and write as 1 + 3i.

b. 54

Step-by-step explanation:

45 is original perimeter for ABC. You subtract 16 and 9 from 45 to get the missing side B which is 20. To answer the the perimeter for triangle CRB you add 20 to the other sides which is 15 and 19. The total is 54.