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joja [24]
3 years ago
15

For i^2 =-1, (3-i)^2 = ? A. 8 B. 10 C. 8-6i D. 8 + 6i E. 10-6i

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
8 0
C. 8- 6i
(3- i) to the power of 2 (expand the expression)

9- 6 i + i to the power of 2
calculate

9 - 6i - 1
calculate

8- 6i.

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17−5r+9r=12+6r−1<br> what is r?
jonny [76]

Answer:

r=3

Step-by-step explanation:

simplify each side

4r+17=6r+11

Subtract 4r from both sides.

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divide both sides by 2

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7 0
3 years ago
Mae ling earns a weekly salary of $325 plus a 6.5% commission on sales at a gift shop. How much would she make in a work week if
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3 years ago
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d

3 0
2 years ago
The figure is made up of a cone and a cylinder
solniwko [45]

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5 0
3 years ago
Zalma’s stock investment in March was $120. In October, it was $400.
Goryan [66]

Answer:

In December, Zalma will have $480.

Step-by-step explanation:

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It's not confirmed, but it's what I got. :D

8 0
3 years ago
Read 2 more answers
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