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cupoosta [38]
3 years ago
15

Pre-calc help? Please explain your answer and I'll mark the Brainliest!

Mathematics
1 answer:
Ghella [55]3 years ago
3 0

Answer:

 B.  (cos 3π/4 + i sin 3π/4)

Step-by-step explanation:

DeMoivre's theorem tells you the cube of a complex number is the cube of its magnitude at 3 times the angle. The given number has a magnitude of 1, so its cube will also. Three times the angle of the given number is ...

  3 × π/4 = 3π/4

so the number you're looking for among the answer choices is ...

  (cos(3π/4) +i·sin(3π/4)) . . . . matches choice B

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Natasha_Volkova [10]

Answer:

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4 0
3 years ago
WILL MARK BRAINLIEST!!!!!! AND 20 POINTS!!!!!!
defon

you didn't include the graph

but i'm a guess c.

6 0
3 years ago
Can you help me with this one
exis [7]
5 is b and 1 is a
1 is A because just change the x value with the number in the table for x and see if y matches like
Y=-2x+6
Y=-2*1 + 6
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And for 5
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Y=0.2x+0.4

I hope this helps you if I’m not right please tell me so if other people use those they know I’m wrong if I am. I don’t think so thou. If not please give me brainiest. Thank you!!
Have a nice night.
- Pam Pam
7 0
3 years ago
Read 2 more answers
There are 45 children in a class. If
Dovator [93]

Answer:

20%

Step-by-step explanation:

Total = 45

Absentees = 9

Percentage  = (No. of absentees / total) × 100

                    = 9 / 45 × 100

                    = 0.2 × 100

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3 years ago
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NUMBER ONE IS THE RIGHT ANGLE AND THE SECIND INE IS SUPPLEMENTARY
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