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
timama [110]
3 years ago
13

How do you do this one?

Mathematics
1 answer:
tankabanditka [31]3 years ago
7 0

Your answer is correct... i^2=-1, so

(3+i)(i^2+8i-2)=(3+i)(-3+8i)

Then distributing 3+i to both terms on the right gives

(3+i)(-3)+(3+i)(8i)=(-9-3i)+(24i+8i^2)=-9-3i+24i-8=-17+21i

You might be interested in
At a​ little-known vacation​ spot, taxi fares are a bargain. A ​63-mile taxi ride takes 72 minutes and costs ​$50.40. You want t
Mademuasel [1]
$26.60, take 72/50.40 to find how much money it is per minute. Set that equal to 38/x- x being the unit price you’re trying to find. Then cross multiply to get $26.60
5 0
3 years ago
Which property is illustrated by this example 26 . 1 = 26
Temka [501]
I'm pretty sure it's Identity I hope it helps :)
6 0
3 years ago
Read 2 more answers
(3 A sum of money doubles itself in 6 years. In how many years, it becomes 5 times? ​
elena-s [515]

Answer:

In 24 years.

Step-by-step explanation:

Let the sum of money be 100 which amounts to 200 ( doubles itself ) in 6 years time. Interest on 100rs. Is 100. Putting the following in simple interest formula. You get :

100=\dfrac{100\times R\times 6}{100}\\\\R=\dfrac{100}{6}

Now when 100 will become 5 times i.e 500 the interest will be 400rs.

Putting in simple interest formula:

400=\dfrac{\dfrac{100\times 100}{6T}}{100}\\\\T=\dfrac{2400}{100}\\\\=24\ yrs

So, in 24 years, it will become 5 times.

4 0
3 years ago
These numbers are either whole numbers, or the negatives of whole numbers. They are called ______. Example: ... -4, -3, -2, -1,
ioda
They are called integers

8 0
3 years ago
Read 2 more answers
Arrange the equations in the correct sequence to rewrite the formula for displacement, , to find a. In the formula, d is displac
OverLord2011 [107]

Answer:

2(d-vt)=-at^2

a=2(d-vt)/t^2

at^2=2(d-vt)

Step-by-step explanation:

Arrange the equations in the correct sequence to rewrite the formula for displacement, d = vt—1/2at^2 to find a. In the formula, d is

displacement, v is final velocity, a is acceleration, and t is time.

Given the formula for calculating the displacement of a body as shown below;

d=vt - 1/2at^2

Where,

d = displacement

v = final velocity

a = acceleration

t = time

To make acceleration(a), the subject of the formula

Subtract vt from both sides of the equation

d=vt - 1/2at^2

d - vt=vt - vt - 1/2at^2

d - vt= -1/2at^2

2(d - vt) = -at^2

Divide both sides by t^2

2(d - vt) / t^2 = -at^2 / t^2

2(d - vt) / t^2 = -a

a= -2(d - vt) / t^2

a=2(vt - d) / t^2

2(vt-d)=at^2

4 0
3 years ago
Other questions:
  • One of the angles is 26°. The second angle is complementary to the first angle. What is the measure of the third angle?
    13·1 answer
  • Which is great 7 or -8 brainly
    13·2 answers
  • How do you slove 57 × 2000 with multiplying with powers of ten
    12·1 answer
  • I NEED HELP PLEASE, THANKS! :)
    10·2 answers
  • How do you find the perimeter of a semi circle
    13·2 answers
  • Given Domain values of 09,-6,-3,0,1.5 and 3, find the corresponding range for the piecewise function below.
    9·1 answer
  • Medical researchers have determined that for exercise to be beneficial, a person’s desirable heart rate, R, in beats per minute,
    12·1 answer
  • The Royal Fruit Company produces two types of fruit drinks. The first type is 30% pure fruit juice, and the second type is 80% p
    11·1 answer
  • A square root function has both x and y intercepts.
    8·1 answer
  • Trisha stocked up on two kids of oatmeal 1/5 of a cup of instant oatmeal and 2/5 of a cup of old-fashiond oatmeal how much oatme
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!