4 years ago

If (x+yi)+(2(x+yi)+3i)=9, what is (x+yi)?

1 answer:

7 0

X + yi + 2x + 2yi + 3i = 9 this first step is just distributing the 2

3x + 3yi = -3i + 9 this step is adding like terms

x+ yi = 3 - i this step is dividing by 3 to all terms... Lowest common factor
then subtracting 3i to the right side of the equation

so x =3 and y= -1
if that the full question?

You might be interested in

Find the area of the regular polygon with the given radius or apothem. Why is the area?

Svetradugi [14.3K]

Answer:56.52

Step-by-step explanation:2x3.14=6.28

6.28x3=18.84

18.84x3=56.52

7 0

3 years ago

You are in charge of the Annual Powder Puff football game. You designed a t-shirt to sell during the event. A company charges $7

vekshin1

We're looking for C(h), where h is the hundreds of shirts. The fact that they cost "$500 for each additional 100 t-shirt" tells us the slope is 500. Knowing that 1 hundred costs 750, we could use point-slope at this point: (C - 750)/(h - 1) = 500C - 750 = 500h - 500C(h) = 500h + 250 We can check that C(1) = 750 and C(2) = 1250, as we expect. I'll leave it to you to evaluate C(5).

7 0

3 years ago

I need help. me please!!!!

castortr0y [4]

It’s the red square. 39.2. Work below. please mark me brainliest!!