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
Zarrin [17]
3 years ago
14

When 3+4i2+i is expressed in the form a+bi, what is the value of a?

Mathematics
1 answer:
mart [117]3 years ago
7 0
Multiplying and dividing with conjugate of 2+i in the given expression, we get(3+ 4i)(2-i)/(2+i)(2-i)=(6-3i+8i-4i^2)/(4-i^2)=(10+5i)/(4+1)=(10+5i)/5=2+i=a+bi<span>Thus a=2</span>
You might be interested in
An image formed by a circular spotlight has a radius of 124 centimeters. What is the area of the circular image? Use 3.14 for pi
Lemur [1.5K]

area = pi X radius squared

 so area = 3.14 x 124^2

= 3.14 x 15376 = 48,280.64 square centimeters.

5 0
3 years ago
Read 2 more answers
A company has budgeted 5 1/4 hours to complete a project, with 1/3 of the time spent on research. How much time does the company
elena-s [515]

Given that a company budgeted 5 1/4 hours to complete a project, determine how much time they spent on research if they spent 1/3 of the total budget.

First, convert the budget from hours into minutes.

5 1/4 hours = 315 minutes

1 hour = 60 min

1/4 hour = 15 min

60 x 5 = 300

300 + 15 = 315

Then, divide the minutes by 3 or multiply it by 1/3.

315 / 3 = 105

315 x 1/3 = 105

Lastly convert to a mixed number.

1 3/4 hour

Thus, the company plans to spend 1 3/4 hours or 1 hour and 45 minutes on research.

7 0
3 years ago
Hey! please help i’ll give brainliest! if it lets me:)
lozanna [386]

Answer:

south since its the opposite

5 0
3 years ago
SOMEOJE HELLP PLSSSSSS
Neporo4naja [7]

Answer:

Step-by-step explanation:

this seems like substitution

If so its the first part is 12x6

second part is 35 x 6

third part is 56 x 6

7 0
3 years ago
Read 2 more answers
The school council was having a bake sale. Jaime purchased a brownie for $0.75, a
Ghella [55]

Answer: the answer is 2.75 because

Step-by-step explanation: 1.25+0.75+0.75=2.75 hope i Helped mark me as brainliest

4 0
3 years ago
Other questions:
  • Marc baked brownies in the brownie pan shown below. Each day, he is going to eat 20 square centimeters of brownie from the pan.
    15·1 answer
  • What is 24.3 rounded to the nearest whole number?<br> Need help
    10·2 answers
  • Is this answer right??
    14·2 answers
  • how many quarter pound burgers can george make out of 3 1/2 pounds of ground beef? explanation please!
    7·2 answers
  • Solve by graphing: y=3(x-2)^2-3
    7·1 answer
  • What is the domain of f?
    12·1 answer
  • Show a way to count from 170 to 410 using tens and hundreds. circle at least one benchmark number.
    11·1 answer
  • The distance between points A and B is?
    10·1 answer
  • What algebraic expression represents "The sum of a number and 9"?
    11·1 answer
  • Each pepperoni slice is 78 of an inch long and costs $0.03. Exactly enough pepperoni slices are laid end to end to have a total
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!