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stich3 [128]
3 years ago
11

Which is the additive inverse of the complex number -8+3i?

Mathematics
1 answer:
lawyer [7]3 years ago
3 0
The additive inverse of a complex z is a complex number -z, so that

\mathsf{z+(-z)=-z+z=0+0i=0}


Finding -z:

\mathsf{z=-8+3i}\\\\\\ \mathsf{z+(-z)=0+0i}\\\\\ \mathsf{-8+3i+(-z)=0+0i}\\\\ \mathsf{-z=0+0i+8-3i}\\\\ \mathsf{-z=(0+8)+(0i-3i)}\\\\ \boxed{\begin{array}{c}\mathsf{-z=8-3i} \end{array}}\qquad\checkmark


If you're having problems understanding this answer, try seeing it through your browser: <span>brainly.com/question/2159647


</span>I hope this helps.


Tags: <em>complex number additive inverse opposite algebra</em>

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Pls help i need this asap
Zielflug [23.3K]

Answer:

Let x = # of commercials

      y = # of movies

<u>System of Equations:</u>

x + y = 90

40x + 110y = 500

Step-by-step explanation:

We have to set our variables before we start solving. After setting the variables, we can set up the equations. If x = # of commercials and y = # of movies, then we can assume x + y = 90, as there have been a total of 90 commercials and movies played altogether. Then, we know that their worth is $500, so the price of all the commercials played and the price of all the movies played (which is 40x + 110y) sum to $500.

8 0
2 years ago
These the answers ❤️.
irina [24]
No ❤️ hahaha i can’t see anything
4 0
3 years ago
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11x + 10y - 8x - 12y<br><br> (a) x + -2y<br> (b) 3x + 2y<br> (c) -x + 2y<br> (d) 3x + -2y
svetoff [14.1K]

Answer:

d) 3x+-2y

Step-by-step explanation:

combine like terms of x and y

11x-8x=3x

10x-12x=-2y

brainliest?

8 0
3 years ago
(show ur work) You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?
vesna_86 [32]

Answer:

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Step-by-step explanation:

40 divided by 5 will give you the $/lb

40/5=8 so its $8/lb

3 0
2 years ago
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mihalych1998 [28]
The first two options imply that x can be somewhere *between* -2 and 4, which clearly isn’t the case. Looking at the two sections graphed, we see that x can be less than, but not equal to, -2 (indicated by the hollow dot at -2) and greater than *or* equal to 4 (indicated by the solid dot at 4). The third option is the only one that describes this situation.
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