3 years ago

Subtract the complex numbers: (-2 + 12i) - (-1 - 9i)

Mathematics

2 answers:

jasenka [17]3 years ago

8 0

Answer:

B. -3 + 3i

Step-by-step explanation:

Using the foil method:

-2 - 1 = -3

12i - 9i = 3i

= -3 + 3i

Andrew [12]3 years ago

3 0

9514 1404 393

Answer:

C) -1 +21i

Step-by-step explanation:

For many purposes, "i" can be treated as though it is a variable. Collect terms in the usual way.

(-2 +12i) -(-1 -9i) . . . . given

= -2 +12i +1 +9i . . . . use the distributive property to eliminate parentheses

= (-2+1) +(12i +9i) . . . group like terms

= -1 +21i

You might be interested in

Bob built birdhouses to sell at the craft fair for $8.00 each. He had to spend $40 for materials . Which inequality represents t

kolbaska11 [484]

Answer:

8x - 40 > 200

Step-by-step explanation:

8 0

3 years ago

You are using the equation 4(p – 7) = 44 to determine how many pictures can be saved at one time to the photo stream on your cel

REY [17]

You would first distribute the 4 in the parenthesis and then you would add 7 to both sides and whatever you get you will have to divide it by 4 to find p. I hope that this hepls.

8 0

3 years ago

Read 2 more answers

16/x = 2/7 cross multiplication

WITCHER [35]

Answer:

x=56

Step-by-step explanation:

16 x 7= x * 2

$x=\frac{16 x7}{2}$

x=56

Hope this helps :)

8 0

3 years ago

What are these numbers from least to greatest? 5.78, -5.9, 58%, -23/4

Feliz [49]

Answer:

-5.9, -23/4, 58%, 5.78

7 0

3 years ago

Read 2 more answers

Solve 8z + 12 = 5z − 21

Mekhanik [1.2K]

z = -11

Steps:
8z+12 = 5z-21
Subtract 12 from both sides
8z+12-12 = 5z-21-12
Simplify
8z = 5z-33
Subtract 5z from both sides
8z-5z = 5z-33-5z
Simplify
3z = -33
Divide both sides by 3
3z/3 = -33/3
Simplify
z = -11

Hope this helps you! (:
-Hamilton1757

3 0

3 years ago