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
Lera25 [3.4K]
3 years ago
7

Can someone check my work?. 1. Simplify the given expression.. (7 − 3i) • (2 − i) . 4 + i (MY ANSWER) . . 14 + 3i . . 11 − 13i .

. 14 − 10i . 2. Simplify the given expression.. (−5 + 3i) • (1 − 2i) . −5 − 6i (MY ANSWER). . 1 + 13i . . 2 + i . . 4 − 5i . 3. Simplify the given expression.. (1 + 3i) + (2 − 5i) . . −1 − 2i . . 3 − 2i (MY ANSWER). . 4 − 3i . . 5 + 6i . 4. Simplify the given expression.. (6 + 2i) − (8 − 3i) . . −2 + 5i (MY ANSWER). . −2 − i . . 8 + 5i . . 8 − 5i .
Mathematics
1 answer:
Annette [7]3 years ago
4 0
1. (7 − 3i) • (2 − i)
It is simplified as follows:
14 - 7i  -6i - 3
11 - 13i

2. <span>(−5 + 3i) • (1 − 2i) 
</span><span>It is simplified as follows:
</span><span>-5 + 10i + 3i + 6
1 + 13i

3. (1 + 3i) + (2 − 5i) 
</span><span>It is simplified as follows:
</span>1 + 3i + 2 − 5i<span>
3 - 2i

4. (6 + 2i) − (8 − 3i) 
</span><span>It is simplified as follows:
</span><span>6 + 2i − 8 + 3i
</span>-2 + 5i
You might be interested in
1.Find by factors the square root of 3600<br>2. Find by factors the cube root of 343​
Contact [7]

Answer:

1)60

2)7

Step-by-step explanation:

1)The square root of 3600 is 60. It is the positive solution of the equation x2 = 3600. The number 3600 is a perfect square.

2)The cube root of 343 is the number which when multiplied by itself three times gives the product as 343. Since 343 can be expressed as 7 × 7 × 7. Therefore, the cube root of 343 = ∛(7 × 7 × 7) = 7.

4 0
3 years ago
Read 2 more answers
Find three consecutive even integers that sum up to -48
Igoryamba
We can write the equation: x + x + 2 + x + 4 = -48, where x is the least digit and x + 4 is the greatest. We get 3x + 6 = -48, 3x = -54. x = -18, so x + 2 is -20, and x + 4 is -22. Therefore, the 3 consecutive even integers that sum to -48 are -18, -20, and -22.
---
Hope this helps!
4 0
3 years ago
The function for the cost of materials to make a muffin is f(x) = Three fourths x + 3, where x is the number of muffins. The fun
larisa [96]

So first let’s put g(f(x)) together by putting f(x) for every x in g(x)

We get g(f(x))=3(3/4x+3)+4 which is the selling price equation

Then you plug in 20 to find the selling price for 20 muffins.

g(f(x))=3(3/4(20)+3)+4

g(f(x))=3(60/4+3)+4

g(f(x))=3(18)+4

g(f(x))=54+4

g(f(x))=58

So the selling price will be $58 for 20 muffins.

7 0
3 years ago
What is 6(3x - 4) = -8
Ludmilka [50]

Answer:

x = 8/9

Step-by-step explanation:

6(3x - 4) = -8

Distribute the 6

18x -24 = -8

Add 24 to each side

18x -24+24 = -8+24

18x = 16

Divide each side by 18

18x/18 =16/18

Simplify the fraction by dividing top and bottom by 2

x = 8/9

8 0
3 years ago
Read 2 more answers
Determine the volume of the triangular prism so below. A. 558 1/8 cubic inches B. 279 1/16 C. 142 5/16 D. 284 5/8
Murljashka [212]

I had the same question as you and the answer is D

4 0
3 years ago
Other questions:
  • The airplane in the scale drawing has a wingspan of a feet and a tail span of b feet. If the tailspin in the drawing is 2 inches
    7·1 answer
  • In the picture down below
    12·1 answer
  • Please help!<br> What is g(f(4))=(g o f)(-2)=?<br> A.21<br> B.23<br> C.25<br> D.27
    6·1 answer
  • Help me plz. 28 points. Dan and Wilbur each improved their yards by planting daylilies and geraniums. They bought their supplies
    5·1 answer
  • PLEASE HELP ME people I beg you
    15·1 answer
  • 8. The local shop normally sells Mars bars for 40 pence. The
    8·1 answer
  • Whats5666778877 x 81 + 1
    14·2 answers
  • Can someone help me please? Would really appreciate it!
    14·1 answer
  • I need help fast and i really don’t understand this at all
    9·2 answers
  • What inequality is graphed on the number line below?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!