piquiin770 piquiin770

17-06-2020
Mathematics

contestada

Need help if (x+yi)+(2(x+yi)+3i)=9,what is x+yi?

Need help if xyi2xyi3i9what is xyi class=

Respuesta :

surjithayer10 surjithayer10

17-06-2020

Answer:

A

Step-by-step explanation:

(x+yi)+(2(x+yi)+3i)=9

x+yi+2x+2yi+3i=9

3x+3yi+3i=9+0i

equating real and imaginary parts

3x=9,x=9/3=3

3y+3=0

3y=-3

y=-3/3=-1

x+yi=3-i

Answer Link

Otras preguntas

Solve and show work please! Help is appreciated ♥️

Angle A is supplementary to angle B. If A. 40 B. 85 C. 5 D. 10

Name someone in your life who might be considered a sage Explain why you chose this person *Confucius*

why are they called amino acids?

How many scientists contributed to the creation of the microscope. What were each of their contributions?

Select all expressions that describe the expression 2 + 5Y A) 1 plus 5 plus Y B) 2 plus 5 times a number Y C) 2 plus the product of 5 and a number Y D) The sum

PLS HELP I NEED HELP QUICK THNX

Two supplementary angles are congruent. Which equation gives the measure in degrees, d, of each angle? CLEAR CHECK d + 2d = 180 2d = 180 d + d = 90 No equation

A man walks 40m East then 30m North.1.1 What was the total distance he walked?

Need help with radius and diameter pls hurry points and I will give brainlest