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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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How far is 0, 7 from the origin
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Answer:

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Step-by-step explanation:

Count the numbers in between (0,0) and (0,7).

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3 years ago
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7 0
3 years ago
the angle of elevation of the top of a building from a point 80 ft away from the building on level ground is 70° determine the b
MA_775_DIABLO [31]
Draw a triangle with shortest side on the ground (horiz.).  The length of this side is 80 feet.  Two angles touch the ground:  a right angle, and the 70 degree angle.
 
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The tangent function is the appropriate one to use here:
                       opp          h
tan 70 deg = -------- = ----------
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                                                                h
Since tan 70 deg  = 2.75,          2.75 = -------
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6 0
4 years ago
How do you write 0.326 and 0.924 in word form?
Sergeeva-Olga [200]
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Hope this helped!! :D
4 0
3 years ago
Read 2 more answers
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