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

The arena wants to estimate the previous two month’s ticket-sale income. In total, 71,115 people attended different events at th

Assoli18 [71]

It would be 25 dollars

6 0

4 years ago

You have a set of 10 cards numbered 1 to 10. You choose a card at random. Event A is

Evgesh-ka [11]

Answer:

35% or 35/100

Step-by-step explanation:

Gage Millar, Algebra 2 tutor

Choosing a number LESS than (not equal to 8) is 7/10 (1,2,3,4,5,6,7)

Chosing an even number is 5/10 (2,4,6,8,10)

so just multiply 7/10 x 5/10 to get 35 over 100, or a 35% chance

6 0

3 years ago

The side length of a square is 5 feet. A. What is the perimeter of the square? B. What is the area of the square?

PolarNik [594]

Answer:

A. 20 B. 25

Step-by-step explanation:

A. Perimeter equals the all the side lengths added together, so 5+5+5+5=20

B. Area equals (for a square) two side lengths multiplied by one another, so 5x5=25

8 0

4 years ago

F(x)=x/3 -2 and g(x)=2x^2+x-3 find (f+g)(x)

Serjik [45]

Answer:

(f+g)(x) = 2x^2 + 4x/3 -5

Step-by-step explanation:

so, (f+g)(x) be y

y = f(x) + g(x)

y = x/3 -2 + 2x^2 + x - 3 = 2x^2 + 4x/3 -5

6 0

2 years ago

The bakers at Healthy Bakery can make 360 bagels in 2 hours. How many bagels can they bake in 12 hours?

barxatty [35]

Take a ratio

360 : 2

x : 12

360 x 12 = 2x

4320= 2x

4320/2 = x

2160 = x

8 0

3 years ago