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Luden [163]
3 years ago
8

10 POINTS PLEASE HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Which of the following is the correct notation for the complex number "√-81 - 4"?

-44+9i

14-9i

-14+i√9

-14+√-81
Mathematics
2 answers:
loris [4]3 years ago
8 0
I think its -44+9i if i am not right i am so sorry<span>
</span>
dexar [7]3 years ago
7 0

Answer

-14+9i is the correct answer hope this helps

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138.2

Step-by-step explanation:

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A survey among freshman at a certain university revealed that the number of hours spent studying before final exams was normally
patriot [66]

Answer: 0.0775

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Given : Mean : \mu = 25

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z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

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For x= 30 hours

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=P(z

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3 years ago
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Mice21 [21]
The answer is 0.687.
8 0
3 years ago
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sup

Step-by-step explanation:

sup

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11x^3 + 15x^2 - 25x + 7 = 0​
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