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dybincka [34]
3 years ago
13

Simplify the expression to a + bi form: (-1 + 2i) – (12 + 7i)

Mathematics
2 answers:
givi [52]3 years ago
4 0

Answer:

-13 - 5i

Step-by-step explanation:

( - 1 + 2i) - (12 + 7i) \\  - 1 + 2i - (12 + 7i) \\  - 1 + 2i - 12 - 7i \\  - 13 + 2i - 7i \\   =  - 13 - 5i

earnstyle [38]3 years ago
3 0

Answer:

→( - 1 + 2i) - (12 + 7i) \\  =  - 1 + 2i - 12 - 7i \\=-1-12+2i-7i \\ = \boxed{  - 13 - 5i}✓

  • <u>- 13 - 5i</u> is the right answer.
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Which equation represents a line that has a slope of 1/3 and passes through point (-2, 1)?
Lorico [155]

Considering the definition of a line, the equation of the line that passes through the point (-2, 1) and has a slope of 1/3 is y= 1/3x + 5/3.

<h3>Linear equation</h3>

A linear equation o line can be expressed in the form y = mx + b

where

  • x and y are coordinates of a point.
  • m is the slope.
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<h3>Line in this case</h3>

In this case, you know:

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Substituting the value of the slope m, you get:

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Replacing the value of the point in previous expression, the value of the ordinate to the origin b can be obtained:

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Finally, the equation of the line is y= 1/3x + 5/3.

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Step-by-step explanation:

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I hope my answer has come to your help. God bless you and have a nice day ahead!
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