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
elixir [45]
3 years ago
15

Multiply (2 -10i) (-5 + 3i) Show each step for credit!

Mathematics
1 answer:
jonny [76]3 years ago
5 0

Answer:

The answer is

<h2>20 + 56i</h2>

Step-by-step explanation:

(2 -10i) (-5 + 3i)

Using FOIL multiply each term in the first bracket by the terms in the second <u>bracket</u>

That's

2(-5) + 2(3i) - 10i(-5) - 10i(3i)

<u>Multiply the numbers and simplify</u>

We have

- 10 + 6i + 50i - 30i²

From the rules of imaginary numbers

<h3>i² = - 1</h3>

So we have

- 10 + 56i - 30(- 1)

- 10 + 56i + 30

Simplify

30 - 10 + 56i

We have the final answer as

<h3>20 + 56i</h3>

Hope this helps you

You might be interested in
A urn contains 3 red and 5 black balls. Tom first withdraws a ball from the urn and Mary withdraws a ball from the urn without r
Papessa [141]

Answer:

The answer is B

Step-by-step explanation:

I learned this from my math teacher

6 0
2 years ago
Read 2 more answers
Rose works eight hours a day for five days a week. how many hours will she work in six weeks ?
Kryger [21]
Start by multiplying 8 and 5 to get the hours worked each week.
Next multiply that by 6 to get how many hours she'll work in 6 weeks. 
7 0
3 years ago
Read 2 more answers
Find an equation for the line below
spayn [35]
The equation of the line is: y=2/-5x + 3 3/5

7 0
3 years ago
A room has an area of 60 square meters and a perimeter of 32 meters. What are the length and width of the room?
Dominik [7]

Answer:

6 and 10

Step-by-step explanation:

xy=60

2(x+y)=32

x+y=16

y=16-x

Substitute y into area equation

x(16-x)=60

16x-x^2=60

x^2-16x+60=0

(x-10)(x-6)=0

x=10, 6

y=6, 10

6 0
2 years ago
What is 142.34 divided by 24? And show work
max2010maxim [7]
<em><u>142.34 divide by 24 will give you the answer of 593.083 ----> </u></em>

<em><u>24 x 5 will equal 120 which is close to 142 then subtract 120 by 142 which will give you 22 then bring down the 3 and you will have 223 which 24 x 9 will give you 216 then subtract 223 -216 which gives you 74 then 24 x 3 = 72 then you add a decimal then a zero which is 20 then add another zero which is 200 then multiply 24 by 8 which is 192 and then subtract 200 by 192 and get 72 and then your answer will keep on going</u></em>.
4 0
3 years ago
Other questions:
  • Is my answer correct? Please see attachment and notify me.
    15·2 answers
  • What is the $x$-intercept of the line perpendicular to the line defined by $3x-2y = 6$ and whose $y$-intercept is 2?
    9·1 answer
  • Look at the triangle: A right angle triangle is shown with hypotenuse equal to 10 centimeters. An acute angle of the triangle is
    15·1 answer
  • Determine if the lines that pass through the given points are parallel, perpendicular or neither. Line A: (-3, 5) and (0, 7) Lin
    7·2 answers
  • Which equation represents a direct variation
    5·2 answers
  • What is an equivalent fraction for 4/12
    14·2 answers
  • What number can be add to <br><img src="https://tex.z-dn.net/?f=%20%7B9x%7D%5E%7B2%7D%20%20%2B%2024x" id="TexFormula1" title=" {
    11·1 answer
  • Evaluate the function f(x) = -3x² – 20<br> Find f(-9)​
    14·1 answer
  • Draw the image of the following segment after a dilation centered at the origin with a scale factor of 2/3
    7·1 answer
  • April wants to borrow $200 from her father and is willing to pay $9 in Interest. Her father wants to charge an interest rate of
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!