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
RSB [31]
2 years ago
9

Which complex number has a distance of √17 from the origin on the complex plane?

Mathematics
2 answers:
Amanda [17]2 years ago
7 0

Answer:

The complex number 4-i has distance  \sqrt{17} from origin.

D is correct

Step-by-step explanation:

We are given the absolute value of complex plane.

If complex number is a+ib then absolute value \sqrt{a^2+b^2}

We have to check the absolute value of each option and check which is equal to \sqrt{17}

Option A:  2+15i

d=\sqrt{2^2+15^2}=\sqrt{4+225}=\sqrt{229}\neq \sqrt{17}

Option B:  17+i

d=\sqrt{17^2+1^2}=\sqrt{289+1}=\sqrt{290}\neq \sqrt{17}

Option C:  20-3i

d=\sqrt{20^2+3^2}=\sqrt{400+9}=\sqrt{409}\neq \sqrt{17}

Option D:  4-i

d=\sqrt{4^2+1^2}=\sqrt{16+1}=\sqrt{17}= \sqrt{17}

Hence, The complex number 4-i has distance  \sqrt{17} from origin.

guapka [62]2 years ago
6 0
Let the complex number be x + iy

Then by the pythagoras therem

17  = x^2 + y^2

D will satisfy this equation

4^2 + (-1)^2  = 17

answer is D  4 - i

You might be interested in
Graph.<br> y - 5 = 4/3(x - 5)
sergejj [24]

Answer:

ok i'll graph it

7 0
3 years ago
Write the following expression using an exponent:<br><br> 5⋅5⋅5⋅5
Vesna [10]

Answer:

5^4

Step-by-step explanation:

i hope this helps :)

8 0
2 years ago
Read 2 more answers
Please help ASAP I’m confused<br><br> I WILL GIVE BRAINLIEST
neonofarm [45]

Answer: x=4.7434

Step-by-step explanation:

Use the pythagorean theorem a^{2} +b^{2} =c^{2}

plug in and solve

x^{2} +3x^{2} =(3\sqrt{10}) ^{2}

4x^{2} =90

x^{2} =22.5

x=4.7424

if you need to solve for the sides

3x = 3(4.7434) = 14.2302

7 0
3 years ago
AABC is isosceles.<br> mZC = 25° and mZA = 8x - 7.
Orlov [11]

Answer:

x = 4

Step-by-step explanation:

<C = <A

25° = 8x - 7

32 = 8x

x = 4

6 0
2 years ago
How to write a quadratic function when given the axis of symmetry?
shutvik [7]
<span>Are you from Connections Academy, public school or any other online school? Then join our discord, we help each other out with homework and just chill. discord. gg/ qZcMArh (make sure to remove the spaces) WE also have our own tutors that can help you! (if the discord link didn't work add ugly guy#1805 on discord. ( we're also a active group that requires a verified email to join due to trolls. It's not hard to do thankfully just go to discord app and sign up : ) |) Connections Academy Discord Online School Discord Homework Help Discord Connexus Discord Public School Discord Connections Discord Academy Discord Connections Academy Reddit Connexus Reddit Connexus Connections Academy Instagram Connections Academy Twitter Connexus homeschool discord homeschool reddit connections academy twitter connections academy discord</span>
3 0
3 years ago
Other questions:
  • Independence probability question, please help
    9·1 answer
  • These are all elapsed time question there are 3 questions.
    14·1 answer
  • Here is an addition sentence
    6·2 answers
  • A(n)=−6−4(n−1)<br> Find the 4th term in the sequence
    9·1 answer
  • Plssssss help meeeeeee​
    15·1 answer
  • Find the area of the triangle.<br> A) 78 m2 <br> B) 175 m2 <br> C) 196 m2 <br> D) 350 m2
    6·2 answers
  • How do i properly write out the equation​
    14·1 answer
  • Which of the following numbers is a power of ten?
    8·2 answers
  • Joe wrote an inequality
    9·1 answer
  • Please help!! will give brainiest
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!