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]
3 years ago
9

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

Mathematics
2 answers:
Amanda [17]3 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]3 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
Last month, Korey’s Comics had a gross profit of $2,385 with a monthly revenue of $3,465. Korey expects similar sales this month
Readme [11.4K]
The answer to the question above is "a. This transaction will decrease Korey’s gross monthly profit by $625" based on Korey's financial situation above. Korey has purchased the $625 assortment of comic however he will not receive his new additional comics until last month. This transaction will increase his cost of good sold and decrease his gross profit.
3 0
3 years ago
Read 2 more answers
For 10 points if good enough please help
azamat

Answer:

$0.75

Step-by-step explanation:

convert 5000 milligrams to grams which is 5.

Then multiply 5 by 0.15 to get the price which is 0.75

7 0
3 years ago
68+(-41)=?<br> Solved and show how you got the answer.
mars1129 [50]

Answer:

27

Step-by-step explanation:

68 + (-41) = ?

Well, adding a negative is the same as subtracting a positive, so...

68 + (-41)   =   68 - 41

68 - 41 = 27

7 0
3 years ago
Read 2 more answers
Given 4x+ 5y = z, solve for y
kiruha [24]

Step-by-step explanation:

y cannot be determined from the information given

6 0
3 years ago
After conducting a survey of all her classmates, Midge discovers that the amount of money everyone spends buying books each mont
andreyandreev [35.5K]

The mean is the average of the numbers: a calculated "central" value of a set of numbers.

Therefore: If the amount spent on books per month by all her classmates is leveled that amount would be $30

To calculate it: add up all the numbers, then divide by how many numbers there are

3 0
3 years ago
Other questions:
  • What is 7+9(9×6)26×74=?×6​
    11·1 answer
  • Write a real world problem with the equation 2×2×3=12​
    13·1 answer
  • Y = -x - 6 2x - 3y = -2 what is the value for y in the solution?
    14·1 answer
  • The target rate for jogging is 8.5 km per hour. The start time is 7:15 am and the end time is 8:30 am. If Malinda jogs at the ta
    9·1 answer
  • Circle the vertex of the angle.
    11·1 answer
  • Enter the common ratio for the geometric sequence below.
    6·1 answer
  • 8y - 1-/2 ( 4y - 16)
    13·1 answer
  • PLEASE HELP BRAINLIST PLEASEEEEEEE
    14·1 answer
  • What percent 21 is of 25
    10·1 answer
  • Is 0.225 a rational number?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!