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
Jet001 [13]
3 years ago
12

Multiplying two complex numbers involves ______.

Mathematics
2 answers:
Alenkasestr [34]3 years ago
8 0

Answer:

Multiplying a complex number by a real number

(x + yi) u = xu + yu i. In other words, you just multiply both parts of the complex number by the real number. For example, 2 times 3 + i is just 6 + 2i. Geometrically, when you double a complex number, just double the distance from the origin, 0.

binomial methods

Complex numbers use binomial methods of multiplication because unlike real numbers, imaginary numbers have two components.

So probably A. I sorry, but I need more information. Hope this helps

Step-by-step explanation:

makvit [3.9K]3 years ago
6 0

I just took the test and the answer that was right was d. scaling and rotation

You might be interested in
A large high school offers AP Statistics and AP Calculus Among the seniors in this school 65% take AP Statistics, 45% take AP Ca
Igoryamba

Answer:

0.8

Step-by-step explanation:

P(AP statistics) = 65%

P(AP Calculus) = 45%

P(AP statistics n AP Calculus) = 30%

Probability of AP statistics or AP Calculus but not both :

Probability of event A or B :

P(AUB) = p(A) + p(B) - p(AnB)

P(AP statistics U AP Calculus) = P(AP statistics) + P(AP Calculus) - P(AP statistics n AP Calculus)

= 0.65 + 0.45 - 0.30

= 0.8

= 80%

4 0
2 years ago
The circumference of a sphere was measured to be 82 cm with a possible error of 0.5 cm.
Nat2105 [25]

Answer:

A) Maximum error = 170.32 cm³

B)Relative error = 0.0575

Step-by-step explanation:

A) Formula for circumference is: C = 2πr

Differentiating with respect to r, we have;

dC/dr = 2π

r is small, so we can write;

ΔC/Δr = 2π

So, Δr = ΔC/2π

We are told that ΔC = 0.5.

Thus; Δr = 0.5/2π = 0.25/π

Now, formula for Volume of a sphere is;

V(r) = (4/3)πr³

Differentiating with respect to r, we have;

dV/dr = 4πr²

Again, r is small, so we can write;

ΔS/Δr = 4πr²

ΔV = 4πr² × Δr

Rewriting, we have;

ΔV = ((2πr)²/π) × Δr

Since C = 2πr, we now have;

ΔV = (C²/π)Δr

ΔV will be maximum when Δr is maximum

Thus, ΔV = (C²/π) × 0.25/π

C = 82 cm

Thus;

ΔV = (82²/π) × 0.25/π

ΔV = 170.32 cm³

B) Formula for relative error = ΔV/V

Relative error = 170.32/((4/3)πr³)

Relative error = 170.32/((4/3)C³/8π³)

Relative errror = 170.32/((4/3)82³/8π³)

Relative error = 170.32/2963.744

Relative error = 0.0575

3 0
3 years ago
Mark wants to improve his free throw percentage in basketball He has shot 1,250 free throws over the last 20 days. He shot eithe
Sedaia [141]
Let's use a for number of days when he shot 50 shots and b for number of days when he shot 100 shots.
We have:
a + b = 20

We also know that he shot total of 1250 shots:
50a + 100 b = 1250

We have two equations. We can solve them for a and b.  Let's rearange first equation for a:
a= 20 - b
We insert this into second equation:
50 * (20 - b ) + 100b = 1250
1000 - 50b + 100b = 1250
50b = 250
b = 5
a = 20 - 5
a = 15

Mark shot 100 shots on 5 days.
4 0
4 years ago
The sum of m and 188 is 232 <br><br>write the sentence as an equation ​
makvit [3.9K]

Answer:

m + 188 = 232

Step-by-step explanation:

sum → +

m + 188 = 232

5 0
3 years ago
Read 2 more answers
Divide. −445÷4 ​−115​ ​​−45 45 ​​115
Ulleksa [173]

Answer:

it a

Step-by-step explanation:

hi

7 0
3 years ago
Other questions:
  • Can some pls help me with these two questions plss
    8·1 answer
  • Define the variable plz ASAP!!!!
    13·1 answer
  • I need help please what 2 x 4 x5 +109323 x 19379
    9·1 answer
  • The lengths of the triangle's sides are 5, 12, and 13. What is the measure of the angle opposite to side 13?
    11·1 answer
  • Which of the following best describes how to use of the addition property of equality to isolate the variable x below?. . 5 = x
    10·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%20-%20144%7D%20" id="TexFormula1" title=" \sqrt{ - 144} " alt=" \sqrt{ - 144} "
    15·2 answers
  • What is the equation of a line with slope 4 and intercept 12?
    6·1 answer
  • Write the standard equation of the circle with the given Center and radius:
    8·1 answer
  • As a plane takes off it ascends at a 20 degree angle of elevation. If the plane has been traveling at an average rate of 290 ft/
    9·1 answer
  • True or False? The derivative of sin(x) is cos(x).
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!