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
Vlad [161]
2 years ago
6

Simplify the expression (8+i)(2+7i)

Mathematics
1 answer:
Rus_ich [418]2 years ago
4 0

Given : (8 + i)(2 + 7i)

⇒ (8 × 2) + (8 × 7i) + (i × 2) + (i × 7i)

⇒ 16 + 56i + 2i + 7i²

We know that i² = -1

⇒ 16 + 58i + 7(-1)

⇒ 16 + 58i - 7

⇒ 9 + 58i

You might be interested in
A recipe uses 8 3/4 cups of milk for every 3 1/2 cups of oatmeal.
Dennis_Churaev [7]
1 1/2 cups of milk for every cup of oatmeal.

8 3/4=8.75     3 1/2=3.50             8.75÷3.50→875÷350=2 175/350

175=1/2 of 350

                                         
4 0
2 years ago
If a sphere is 120 feet in diameter what is the volume? <br><br> Help please
natulia [17]

Answer:

120

Step-by-step explanation:

3 0
2 years ago
Please help me . I am trying to do cancellation but i am having trouble
qwelly [4]
In this question, you are only able to cancel out the (x + 5). The others are unable to be cancelled.
4 0
3 years ago
Write the pair of fractions as a pair of fractions with a common denominator
Ostrovityanka [42]
3/10 and 4/10 and 4/12 and 9/12
7 0
2 years ago
20 is what percent of 52
Maslowich
The process here is finding out the smallest number's % towards the largest number.

Divide 20 by 52:
20/52 = 0.38 (estimated) | This is the % in decimal form, which is 38%.

Conclusion: 20 is 38% of 52.

{---Further Elaboration for Future Reference---}

Finding the Smallest Number:

What number is 25% of 60?

Multiply 60 by the decimal form of 25%.
60 * 0.25 = 15 | 15 is 25% of 60.

Finding the Percentage. (Like what we already did.)

30 is what percent of 150?

Divide 30 by 150.
30/150 = 0.2 | 30 is 20% of 150.

Finding the Largest Number.

12 is 30% of what number?

Divide 12 by the decimal form of 30%.
12/0.3 = 40 | 12 is 30% of 40.

I hope this helps, have a great rest of your day! ^ ^
| | Ghostgate | |
5 0
3 years ago
Read 2 more answers
Other questions:
  • WHAT IS THE PERCENTS OF 13/50 , 3/5 3/20 5/8 45/90 7/5 19/25
    8·1 answer
  • A flower bed is in the shape of a triangle with one side twice the length of the shortest side and the third side is 30 feet mor
    5·1 answer
  • Y = tg (arcsin 3/5 + arccos 4/5)
    14·1 answer
  • 4.5 + pi (3.14) is
    7·1 answer
  • Solve: 2 In 3 = In(x-4)
    9·1 answer
  • please help , giving brainliest and a thanks ,(right answers only) scammers get reported. (worth 20 points)
    12·1 answer
  • Which expression can be used to represent the volume of this prism?
    5·2 answers
  • 7.
    7·1 answer
  • Taylor buys bottles of nail polish that cost $3.95 each. She has a maximum of $30 to spend on nail polish purchases. The total c
    5·1 answer
  • The following set of random numbers represents 20 simulations of three daily
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!