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
Elden [556K]
3 years ago
9

Please explain this type of problem (1+2i)(1+3i)

Mathematics
1 answer:
zhuklara [117]3 years ago
7 0

Answer:

-5(1-I) is the answer

Step-by-step explanation:

(1+2i)(1+3i)

1(1+3i)+2i(1+3i)

1+3i+2i+6i^2

As i^2=-1

1+5i+6(-1)

1-6+5i

-5+5i

Taking -5 as common

-5(1-i)

I hope this will help you :)

You might be interested in
After 56 cans of soup were sold, a clerk moved the remaining cans to a display case. The display case had shelves that could eac
GaryK [48]

10 because if you take 56 divided by 9 that would equal 6.22222 so it would be 7 since you can’t have .222 shelves

6 0
3 years ago
Read 2 more answers
The frequency table was made using a box containing slips of paper. Each slip of paper was numbered 0, 1, 2, 3, or 4.
inna [77]
In order to make a frequency plot first we need to find the proportion of each outcome.

Total number of results = 15+20+5+5+5 = 50

Frequency of 0 = 15
Proportion of 0 = 15/50 = 0.3

Frequency of 1 = 20
Proportion of 0 = 20/50 = 0.4

Frequency of 2 = 5
Proportion of 2 = 5/50 = 0.1

Frequency of 3 = 5
Proportion of 3 = 5/50 = 0.1

Frequency of 4 = 5
Proportion of 4 = 5/50 = 0.1

Now we need to plot the data on a frequency plot. The x-axis shows the outcomes from 0 to 4 and y-axis shows the frequency of each outcomes. The frequency plot is shown in the figure attached with.

4 0
3 years ago
Read 2 more answers
One side of a square is 3x + 2. Which expression represents the perimeter?
MissTica

Your answer would be 12x + 8 because there are 4 sides to a square and they are all 3x + 2, so you would need to multiply 3x + 2 by 4 which you can do by expanding brackets which gives you 4(3x + 2) and thus when you multiply it out you get 12x + 8. I hope this helps!

4 0
3 years ago
Read 2 more answers
What is 7% tax on a $9.79 purchase
tangare [24]
<span>To find 7% tax on $9.79 multiply by 0.07 getting 0.6853
Then add 9.79 to 0.6853 getting 10.4753 (round to $10.48) </span>
4 0
3 years ago
What is the difference between a standard normal distribution and a nonstandard normal​ distribution? Choose the correct answer
devlian [24]

Answer:

b)The standard normal distribution has a mean of 0 and a standard deviation of​ 1, while a nonstandard normal distribution has a different value for one or both of those parameters.

Step-by-step explanation:

The standard normal distribution, ( and associated tables )  N (0,1) where 0 is the mean and 1 the standard deviation, is a model representative of all other nonstandard normal distribution. Therefore we apply such concepts and tebles in the solution of problems concerning normal distribution

8 0
3 years ago
Other questions:
  • Matt wrote the number four million, three hundred five thousand, seven hundred sisty two. Check the error
    9·1 answer
  • Find the value of the expression.<br> b2 − a <br> for a = 4 and b = 5
    11·2 answers
  • Andrea has four times the number of marbles that Jennifer has. If x equals the number of marbles that Jennifer has, which expres
    14·1 answer
  • Is this true or false? The following graph represents a proportional relationship:
    12·2 answers
  • Evaluate.<br> 3/4<br> minus<br> 3/8<br> Divided by <br> 2/3
    9·1 answer
  • Help PLEASE 8 minutes left to submit
    7·2 answers
  • a 42 foot flagpole near the washington monument casts a shadow that is 14 feet long. At the same time, the washington monument c
    13·1 answer
  • Is the sequence 4, 8, 12, 16, 20, ... a geometric sequence? If it is a geometric sequence, what is the common ratio?
    15·1 answer
  • Each year a certain amount of money is deposited in an account which pays an annual interest rate of so that at the end of each
    13·1 answer
  • Connor gets one hour of lunch and recess every day at school. He eats lunch first, and then gets to go outside for recess. He be
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!