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
SVEN [57.7K]
2 years ago
12

Solve for z, and give your answer in the form a + bi

Mathematics
1 answer:
zzz [600]2 years ago
5 0
The answer is z = 3 + i

z = a + bi
conj(z) = a - bi

conj(7 + 3i) = 7 - 3i

<span>(conj)z + 2z = 2 + 4i + conj(7 + 3i)
</span>a - bi + 2(a + bi) =<span> 2 + 4i + 7 - 3i
</span>a - bi + 2a + 2bi =<span> 2 + 4i + 7 - 3i
</span>3a + bi = 9 + i

From here:
3a = 9        and      bi = i
a = 9/3                   b = i/i
a = 3                       b = 1

z = a + bi
z = 3 + 1 * i
z = 3 + i
You might be interested in
8x + 12 = 4r - 16 find r
Ber [7]
After r duhh IM SORRY
7 0
2 years ago
Read 2 more answers
For the line segment whose endpoints are R(1, 2) and S(6, 7), find the y value for the point located 3 ov`er 4 the distance from
Mrac [35]

Answer:

23/4

Step-by-step explanation:

This means that it is 3/4 of the distance in the x <u>and</u> y coordinates, so it is 3/4 of the way from 2 to 7, and since this is a difference of 7-2=5, then it is 2 + (5 * 3/4) or 2 + 15/4 or 23/4.

7 0
3 years ago
I'm in trouble. Please solve this two questions!! ​
melomori [17]

Answer:

.........................

4 0
3 years ago
Read 2 more answers
Please help me on these two questions
irina [24]

Answer:A for the first one and C for the second one

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
On a vacation in Puerto Rico rose jumped off a cliff into a river in El Yunque go forest reserve her height as a function of tim
gayaneshka [121]

Answer: t = 6 s

Step-by-step explanation:

When Rose hit the water, the height of the jump is 0, so: h(t) = 0.

Resolving it, we have:

-16t² + 16t + 480 = 0

To simplify the second degree equation, divided it by 16:

-t² + t + 30 = 0

Now, solve the equation using Bhaskara:

Δ = 1² - 4. (-1) . 30

Δ = 1 + 120

Δ = 121

t = \frac{-1+\sqrt{121} }{-2}

t₁ = \frac{-1 + 11}{-2} = - 5

t₂ = \frac{-11-11}{-2} = 6

Since time can be negative, it took t = 6s for Rose to hit the water.

6 0
3 years ago
Other questions:
  • 11. The formula to find the AREA of a triangle is A = 1/2bh<br> True<br> False
    12·1 answer
  • I accidentally clicked that it isn’t the answer so help? What’s the correct answer?
    15·2 answers
  • PLEASE HELP ME I am desperate
    11·1 answer
  • What is the value of x?<br><br> A. 6<br> B. 6 square root of 2<br> C. 12<br> D. 12 square root of 2
    9·2 answers
  • Kelvin pushes a block with F Newtons of force.
    15·1 answer
  • There are 12 books in a case.there are 6 cases in a box and 24 boxes in a container
    5·2 answers
  • Please help ASAP this is due very soon and I need help.
    9·1 answer
  • No joke answers. No links. Will award BRAINLIEST if correct!!Question 12 (1 point)
    6·1 answer
  • Please help me im going to fail :c
    15·1 answer
  • Finding the Slope: Identify the slope on the graph. I will give 10 brainlist if correct ​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!