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Rina8888 [55]
2 years ago
15

Simplify (2-7i)+(3+9i) step by step

Mathematics
2 answers:
Mariana [72]2 years ago
5 0

Answer:

first identify the like terms;

(2-7i)+(3+9i)

(2+3-7i+9i)

5+2i

gayaneshka [121]2 years ago
3 0

Answer:

5 + 2i

Step-by-step explanation:

1) Remove parentheses

2 - 7i + 3 + 9i

2) Collect like terms

(2 + 3) + (-7i + 9i)

3) Simplify

5 + 2i

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gavmur [86]
Step 1: <span>Set up the long division.
 
  _______
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Step 2: </span><span>Calculate 32 ÷ 4, which is 8.
       
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4| 3 2 2 0
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Step 3: Bring down 20, so that 20 is large enough to be divided by 4.

__ 8____
4| 3 2 2 0
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_________
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Step 4: Calculate<span> 20 ÷ 4, which is 5.
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4| 3 2 2 0
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What values of k will make the line containing points (k,3) and (-2,1) parallel to the line through (5, K) and (1,0)
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k = -4 or 2

Step-by-step explanation:

For the lines to be parallel, the lines would need to be the same slope. This means to find the slope of each we would take the difference of the rise over the run.

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\frac{0-k}{1-5}=\frac{-k}{-4}

To find K, set them equal.

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(k+4)(k-2)=0

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k-2=0 so k=2

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