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weqwewe [10]
3 years ago
13

What is the sum of 12 – 5i and –3 + 4i? –16 + 63i 9 – i 9 – 9i 15 – 9i

Mathematics
2 answers:
iogann1982 [59]3 years ago
4 0

Answer:

B. 9 - i

Step-by-step explanation:

Edge 2020

Svetach [21]3 years ago
3 0

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf{9 - i}}}}}

Step-by-step explanation:

\sf{12 - 5i + ( - 3 + 4i)}

When there is a ( + ) in front of an expression in parentheses, there is no need to change the sign of each term. That means, the expression remains the same. Just remove the parentheses

\longrightarrow{ \sf{12 - 5i - 3 + 4i}}

Collect like terms

\longrightarrow{ \sf{ 12 - 3 - 5i + 4i}}

Subtract 3 from 12

\longrightarrow{ \sf{9 - 5i + 4i}}

Collect like terms

\longrightarrow{ \sf{9 - i}}

Hope I helped!

Best regards! :D

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Help please thank you and also show the work please
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Answer:

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Step-by-step explanation:

(1,-8)

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Make the equation into standard form

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5y=-7x-7

Divide all by 5

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Since they are parrallel, we know the slope is -1.4x

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(1,-8) is one of the points it goes through

Replace the x and y in the equation for the x and y in the incomplete equation

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Add 1.4 to both sides

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Thus the equation is

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3 years ago
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8 0
3 years ago
Read 2 more answers
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