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
rewona [7]
3 years ago
9

Explain in detail with at least two sentences how to represent the product of A and B geometrically given that A=15+56i and B =

7 + 4i. Give the coordinate of A • B in polar form.
Mathematics
1 answer:
Nookie1986 [14]3 years ago
7 0

Basically each part of the first complex number gets multiplied by each part of the second complex number. You are multiplying 2 binomials.

(15 + 56i(7 + 4i)

= 105 + 60i + 392i + 224i^2

= 105 + 452i - 224 ( because i^2 = -1)

= - 119 + 452i


You might be interested in
A line of roses forms the diagonal of a rectangular flower garden. Th e line of roses is 18.4 m long, and one side of the garden
professor190 [17]
Given that the garden is rectangular and a line of roses form the diagonal 18.4 m long, we required to calculate the length of the perpendicular side.
Here we shall use the Pythagorean theorem.
c²=a²+b²
where c is the hypotenuse, a and b are the legs.
from the information given:
c=18.4 m
a=13 m
plugging this into our expression we get:
18.4²=13²+b²
next we solve for the value of b
b²=18.4²-13²
b²=338.56-169
b²=169.56
b=√169.56
b=13.0215
hence the length to the nearest tenth of a meter will be approximately 13.0 m
6 0
3 years ago
What is the area of this figure? <br>​
polet [3.4K]
First, calculate the area of the square, which is 25

next, find the area of one half of the triangle by multiplying 2.5 and 4 (10), then dividing that by 2 (5).

since the two half’s of the triangle are symmetrical, just add 5 and 5 to get 10.

add the area of the triangle (10) and the square (25) to get the total area.

the answer should be 35

hope this helps!
4 0
2 years ago
Gabriela buys a basket of coconuts on sale for $22 before tax. The sales tax is 12% What is the total price Gabriela pays for th
vazorg [7]
First you need to make a multiplier:
1-(12/100) = 0.78

Then you multiply the price by 1.12 to get the final answer;
22 * 0.78 = 17.16

This means it cost $17.16 after the 12% sales tax.

Hope this helps! :)
4 0
3 years ago
How did you identify the line of sight, angle of elevation and angle of depression?
Arturiano [62]

Answer:

The term angle of elevation denotes the angle from the horizontal upward to an object. An observer's line of sight would be above the horizontal. The term angle of depression denotes the angle from the horizontal downward to an object. An observer's line of sight would be below the horizontal.

Step-by-step explanation:

ヾ(^-^)ノ

7 0
1 year ago
A trapezoid has an area of 30 in2. If the lengths of the bases are 4.8 in. and 5.2 in., what is the height?
Aleonysh [2.5K]
5.2+4.8= 10
So it has to be 20 I think
3 0
3 years ago
Other questions:
  • A 10-acre field produced 750 bushels of corn. At that rate,how corn can be produced from a 14-acre field?( explain in steps) Ple
    12·2 answers
  • 29 thousands = blank
    8·2 answers
  • How do you do this question??????
    9·1 answer
  • To bill customers for water usage, one city converts the number of gallons used into units. This relationship is represented by
    14·1 answer
  • Which statement about speed and/or velocity is true? an airplane was at 34500 feet in the air before it descents the airplane de
    11·1 answer
  • What is the sum of the cards card one-9 card 2 is 4 card 3 is -3 card 4 is 2​
    13·1 answer
  • How do I solve this? ( explanation with answer)
    7·2 answers
  • The distance betwee<br> 4. C(0,0), D(5,2)
    10·2 answers
  • I need help w/ this please help me!!
    9·2 answers
  • Which of the following is a line segment as shown in the drawing?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!