jonathan2552526 jonathan2552526

24-11-2020
Mathematics

contestada

What is the sum of 4 - 7i and the conjugate of 2 + 3i ?
A.6 - 4i
B.8 - 21i
C.8 - 4i
D.6 - 10i

Respuesta :

LammettHash LammettHash

24-11-2020

The conjugate of a complex number z = a + b i is z * = a - b i. So

(4 - 7i ) + (2 + 3i )* = (4 - 7i ) + (2 - 3i )

… = (4 + 2) + (-7i - 3i)

… = 6 - 10i

and the answer is D.

Answer Link

Otras preguntas

Help!!!!!!! Plsss!! Plsss!

Which M's of advertising highlight a company's USP? A. message B. money OC. mission D. measurement

A student has passed 60 percent of the 20 quizzes he has written so far successfully. If the student writes 50 quizzes during the year, and passes 80 percent of

What is the recursive formula for 6,-2,-10,-18

Most Deaf children are born into Deaf families. O True O False

Which of the following grows on a tree? el cerdo el pollo la fresa el limón

Example of rectants

George is building a fence he builds his fence at a constant rate of 1/3 section of fence every 1/2 hour at this rate what fraction represents the section of fe

What is the slope of the line that passes through the given points? (12,5) and (-7,7)

Identify an element on the periodic table that is chemically similar to boron (B) Options CISiGaDsOsMoTiLi(PLEASE HURRY ASAP IM ON A PLATO MASTERY TEST!) (Image