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ziro4ka [17]
3 years ago
7

(3-5i)(2+9i)+(7+2i)(7-2i)

Mathematics
1 answer:
kondor19780726 [428]3 years ago
7 0
i^{2} = -1

-----------------------------------------

(3-5i)(2+9i)+(7+2i)(7-2i) = \\  \\  =  6 + 27i - 10i - 45i^{2} + 49 - 14i + 14i - 4i^{2} =  \\  \\  =55 + 17i + 45 + 4   = \boxed{104 + 17i}
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Answer:

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umka2103 [35]

Answer:

5 + 3.5h = 29.50

Step-by-step explanation:

The flat fee means that you will be paid the money with no change to it.

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So summary:

5+3.5h = 29.50

Evaluation:

5+3.5h = 29.50

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3 years ago
A pool measuring 10 meters by 26 meters is surrounded by a path of uniform​ width, as shown in the figure. If the area of the po
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Based on the measurements of the pool and the path of uniform width, the area of the width and length of the path can be found to be 28.8 meters.

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The area of the path can therefore be found to be:

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8 0
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