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olga2289 [7]
3 years ago
6

Which is equal to (2+3i)+(-4+i)? A, -2-4i B, -2-2i C, -2+2i D, -2+4i E, 6+4i

Mathematics
2 answers:
Darya [45]3 years ago
8 0

Answer:

-2+4i the ansewr is D.

Step-by-step explanation:

Verify Left hand:

Simplify the following:

2 + 3 i - 4 + i

2 + 3 i - 4 + i = (2 - 4) + (3 i + i):

(3 i + i) + (2 - 4)

2 - 4 = -2:

-2 + (3 i + i)

3 i + i = 4 i:

4 i - 2

Factor 2 out of 4 i - 2 giving 2 (2 i - 1):

Answer: 2 (2 i - 1)

Verify Right Hand:

Simplify the following:

4 i - 2

Factor 2 out of 4 i - 2 giving 2 (2 i - 1):

Answer: 2 (2 i - 1)

inysia [295]3 years ago
6 0

Answer:

D. -2+4i

Step-by-step explanation:

just combine like terms :)

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Which of the following fits with the recursive rule for the dots above?
gogolik [260]

Answer:

A

Step-by-step explanation:

The recursive rule lets us find a term in the sequence from the previous term.

The sequence of dots is

4 , 16, 64

Thus multiplying the previous term by 4 gives the required term, thus

f(x) = f(x - 1) × 4 : f(1) = 4

so

f(2) = f(1) × 4 = 4 × 4 = 16 ← true

f(3) = f(2) × 4 = 16 × 4 = 64 ← true

A is the correct choice

6 0
3 years ago
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Ksivusya [100]

Answer:

9/24

Step-by-step explanation:

3/8

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Check:

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7 0
3 years ago
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Alexeev081 [22]

Answer:

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Step-by-step explanation:

4x+y=7

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slope is 4 (Up 4, Right 1)

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5 0
3 years ago
In a word problem, instead of calling it the slope, we call it the starting point instead.
Vesnalui [34]
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Although the two terms are interchangeable, in presenting the mathematical question, we need to use the term starting point so as to refer to the place where the slope starts, and not the whole slope.
8 0
4 years ago
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trapecia [35]

Answer:

easy

Step-by-step explanation:

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