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
matrenka [14]
3 years ago
5

Simplify (11 + 5i)(11 - 51)

Mathematics
2 answers:
Ede4ka [16]3 years ago
7 0

Answer:

 (146 +  0i)

Step-by-step explanation:

(11+5i)(11-5i)

The formula is :

(a+bi) • (x+yi)  = ax+by•i^2+(ay+bx)i

and since  i^2 = -1  it can be written as :

ax - by + (ay + bx) i

( 11 +  5i) • ( 11 -  5i) =

 (146 +  0i)

hope this helped brainlest owo???

mixas84 [53]3 years ago
3 0

Answer:

146

Step-by-step explanation:

(11 + 5i)(11 - 5i) =

Use the product of a sum and a difference, (a + b)(a - b) = a^2 - b^2.

= 11^2 - (5i)^2

= 121 - (25)(i^2)

= 121 - (25)(-1)

= 121 - (-25)

= 121 + 25

= 146

You might be interested in
What is 110% of 250?
romanna [79]

Answer:

275

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Employees in 2012 paid 4.2% of their gross wages towards social security (FICA tax), while employers paid another 6.2%. How much
yaroslaw [1]

The number of earnings towards social security should be $1,890.

According to the statement

We have to find that the security out of their gross wages.

So, For this purpose, we know that the

Gross pay refers to the amount used to calculate the wages of an employee or salary.

From the given information:

The employers in 2012 paid 4.2%.

The employer should paid 6.2%.

And, the earning should be $45,000.

Based on the above information, the calculation is as follows:

4.2% * 45,000

= $1,890

Therefore, we will conclude that the number of earnings towards social security should be $1,890.

Learn more about Gross pay here

brainly.com/question/15530787

#SPJ1

4 0
2 years ago
HELP ASAP WILL MARK BRAINLIEST<br> IF YOU DONT KNOW DONT ANSWER
NemiM [27]

Answer:

c is 120 degrees

3 0
3 years ago
Read 2 more answers
4/5 equivalent fraction?
Grace [21]
4/5 = 8/10 = 12/15 = 16/20 = 20/25
Hope it  helps
6 0
3 years ago
10 points.............
lions [1.4K]
2nd one is the answer to it.
8 0
3 years ago
Read 2 more answers
Other questions:
  • a triangle has side lengths of (5.5x + 6.2y) centimeters, (4.3x + 8.3z) centimeters, and (1.6z - 5.1y) centimeters. which expres
    6·1 answer
  • Can someone please help me
    9·1 answer
  • I need help please and thank you
    14·1 answer
  • Simplify 2/5 - 1/6 simplify each of the following questions
    6·1 answer
  • Which expression is equivalent to log Subscript w Baseline StartFraction (x squared minus 6) Superscript 4 Baseline Over RootInd
    6·2 answers
  • 1*(-7+4)=__*-7+__*4=__+__=3
    13·1 answer
  • two rival dry cleaners both advertise their prices. Store a prices are modeled by the expression 8x-5 where X is the number of
    6·1 answer
  • Please help me i’ll give brainliest or whatever its called
    11·1 answer
  • What is 10×25 to the sixth power
    6·1 answer
  • Multiply.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!