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joja [24]
3 years ago
15

For i^2 =-1, (3-i)^2 = ? A. 8 B. 10 C. 8-6i D. 8 + 6i E. 10-6i

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
8 0
C. 8- 6i
(3- i) to the power of 2 (expand the expression)

9- 6 i + i to the power of 2
calculate

9 - 6i - 1
calculate

8- 6i.

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Let ƒ(x) = x^2 + 2x and g(x) = 2x. Evaluate the composition (ƒ ∘ g)(2).
FinnZ [79.3K]

Answer:

The answer is option D.

Step-by-step explanation:

f(x) = x² + 2x

g(x) = 2x

To find (ƒ ∘ g)(2) first find (ƒ ∘ g)

To find (ƒ ∘ g) wherever you see x in f(x) replace it with g(x)

That's

(ƒ ∘ g) = (2x)² + 2(2x)

= 4x² + 4x

Substitute 2 into the expression

That's

(ƒ ∘ g)(2) = 4(2)² + 4(2)

= 4(4) + 8

= 16 + 8

= 24

Hope this helps you.

7 0
4 years ago
A circle has a diameter AB, and its center is at (-3, 3). Point A is at (1/2,6). Where is point B located?
erastovalidia [21]

The point B is located at (-6.5, 0)

<h3>How to determine where is point B located?</h3>

The points are given as:

A = (1/2, 6)

Center = (-3, 3)

The center is calculated as:

Center = 0.5 * (x1 + x2, y1 + y2)

So, we have:

(-3, 3) = 0.5 * (1/2 + x, 6 + y)

This gives

(-6, 6) = (1/2 + x, 6 + y)

Solve for x and y

1/2 + x = -6

6 + y = 6

This gives

x = -6.5

y = 0

Hence, the point B is located at (-6.5, 0)

Read more about coordinate points at:

brainly.com/question/5566419

#SPJ1

7 0
1 year ago
The United States has 12383 miles of a coastline. If .8% of the coastline is located in Georgia, then about how many miles of co
In-s [12.5K]
So you have to find 0.8% of 12383 to find the answer. You do this by first dividing 12383 by 1000 to get 0.1%, which is 1.2383. Then, you multiply 1.2383 by 8 to get 0.8%, which is 9.9064 miles, which is your answer. Hope this helped!
6 0
3 years ago
Pls help me. Pls and thank you
Drupady [299]

Answer:

a=12

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Will give brainiest for correct answer, but i am really behind in work right now
morpeh [17]

Answer:

here the ans

hope it is helpful to u.. mrk it as brainliest if is helps u

8 0
3 years ago
Read 2 more answers
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