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
AleksandrR [38]
3 years ago
13

7-4i divided by 2+i how to solve it?

Mathematics
1 answer:
cupoosta [38]3 years ago
8 0
\cfrac{7-4i}{2+i}\\\\ = \cfrac{(7-4i)(2-i)}{(2+i)(2-i)} \\\\ =\cfrac{14-7i-8i-4}{4+1} \\\\= \cfrac{10-15i}{5} \\\\= \cfrac{5(2-3i)}{5} \\\\=2-3i
You might be interested in
What is the width of a rectangle prism with the length of 13 feet volume of 11,232 ft.³ and height of 36
vekshin1
To get the volume of a rectangular prism, you multiply the base times the height by the width, so to get the width you would divide 11,232 by 13 which is 864, then you divide that by 36 to get 24, so the width would be 24.
5 0
3 years ago
Rewrite 3 x 6/8 as the product of a unit fraction and a whole number
Elanso [62]

3/1×6/8=3/1×3/4=9/4=2 1/4

5 0
4 years ago
Hi i need some help on this it will really help
Fiesta28 [93]

Answer:

He can afford 5 large cheese pizzas.

Step-by-step explanation:

$40 ÷ $7.50 = 5.333333

You cannot buy 1/3 of a pizza, so you round the number to a whole number.

5.333333 ----> 5

5 large cheese pizzas

7 0
3 years ago
Read 2 more answers
How many whole servings of 3/2 cups are in 67/3 cups of fruit punch
Lerok [7]
14 8/9 cups of fruit punch
4 0
3 years ago
Given amn 45 and abc 45 the triangles are similar by
Sever21 [200]

Answer:

JUST DOING THIS FOR POINTS

Step-by-step explanation:

LOL

8 0
3 years ago
Other questions:
  • What is the slope of the line passing through the points (-5,9) and (2,-12)​
    5·1 answer
  • Cora is saving for vacation the total cost of the vacationers $, 800.36 Cora is saving for vacation the total cost of the vacati
    6·2 answers
  • Find the range of the function. f(x)=10-x^2
    14·1 answer
  • Enter the number that belongs in the green box.
    5·2 answers
  • What is the distance between the points (4,3) and (1,-1) on the coordinate plane
    14·2 answers
  • A building contractor has a piece of crown molding that is 48 ½ inches long. He cuts off one piece measuring 10 ¼ inches and ano
    14·1 answer
  • HELPPPP PLEASE. Ill give a brainliest I guess
    5·1 answer
  • Estimate 307‾‾‾‾√ between two consecutive whole numbers. Enter the numbers in the boxes below.
    5·1 answer
  • Will give Brainliest What is the graph of the equation y=-1/4+2?
    13·2 answers
  • At the start of a lab experiment, the temperature of a liquid was 15 °C. The temperature of the liquid was lowered by 9.5 °C eve
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!