1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
a_sh-v [17]
2 years ago
10

Given that x = 3 + 8i and y = 7 - i, match the equivalent expressions.

Mathematics
1 answer:
harkovskaia [24]2 years ago
8 0
We have the following expressions:
 x = 3 + 8i
 y = 7 - i
 -x * y = (- 3 - 8i) * (7 - i) = -21 + 3i - 56i - 8 = -29 -53i
 2x-3y = 2 (3 + 8i) - 3 (7 - i) = 6 + 16i - 21 + 3i = -15 + 19i
 -5x + y = -5 (3 + 8i) + (7 - i) = -15 - 40i + 7 - i = -8 -41i
 x * 2y = (3 + 8i) * (14 - 2i) = 42 - 6i + 112i + 16 = 58 + 106i
 Answer:
 
-x * y = -29 -53i
 
2x-3y = -15 + 19i
 
-5x + y = -8 -41i
 x * 2y = 58 + 106i
You might be interested in
I neeeed helppppppp pleaseeee
Artist 52 [7]

Answer: 6144m^2

Step-by-step explanation:

4 0
2 years ago
What is -6474-46474 don’t know
Irina-Kira [14]

HEY!!

Answer: -52948

Hope this helps!

~LENA~

6 0
3 years ago
A bag has 9 blue marbles, 7 red marbles, 4 green marbles
scoundrel [369]

Answer:

7/25

Step-by-step explanation:

First we need to determine how many total marbles

9blue+7red+4green+5purple = 25 marbles

P(red) = red/total

          = 7/25

7 0
3 years ago
Read 2 more answers
Help I don’t understand this
Ganezh [65]

Answer:

Step-by-step explanation:

they are opposite angles, so we put them equal to each other.

25.

6a+10= 130

6a=120    a=20   so now we plug it in 6(20) +10= 130

26.   4a-4=2a+30

      2a=34      a=17   sso now we plug in 4(17)-4= 64    2(17)+30= 64

27.    6y+1=4y+9                             2x-5=x+7

          2y=8                                      x=2

         y=4

now plug in 6(4)+1=25     4(4)+9=25     2(2)-5= -1     (2)+7=9

5 0
3 years ago
4xsquared - 9=0? could anyone help me solve this quadratic equation by FACTORING?
Verizon [17]
\bf \textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-------------------------------\\\\
4x^2-9=0\implies 2^2x^2-3^2=0\implies (2x)^2-3^2=0
\\\\\\\
[(2x)-3][(2x)+3]=0\implies 
\begin{cases}
2x-3=0\\
2x=3\\
x=\frac{3}{2}\\
------\\
2x+3=0\\
2x=-3\\
x=-\frac{3}{2}
\end{cases}
7 0
3 years ago
Other questions:
  • Booker owns 85 vidoe games he has 3 shelves to put the games on.each shelf can hold 40 video games.how many more vidoe games doe
    5·1 answer
  • Answer this math quedtion <br> 40s+(2b)s+200
    10·1 answer
  • If you are good at sequences in math please help I am giving more points
    7·2 answers
  • PLS HELP WILL GIVE BRAINLIEST IF CORRECT
    7·2 answers
  • If you wanted to make a game where you pay $5 if you can't guess a random dogs weight within 16lbs what payout should you offer
    10·1 answer
  • I NEED ANSWERS ASAP(WORTH 20 POINTS) WILL MARK BRAINLIEST
    9·2 answers
  • Please help me....................​
    11·2 answers
  • Plsss help. Thanks!!
    6·2 answers
  • 2(4x+3)=7x+5<br><br> (SHOW WORK)<br><br><br><br><br> REPOST
    6·2 answers
  • For Exercises 4-16, use inductive reasoning to find the next two terms in each sequence, insertyour sketches for 12, 14, and 16.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!