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Naily [24]
3 years ago
5

Help me please! I'm stuck and I need the answer now! Thx so much!

Mathematics
2 answers:
GarryVolchara [31]3 years ago
8 0

If ,

\bold{z=-3+5i   }

so,conjugate of z

\overline{ z }=\bold{-3-5i   }

Because, in argand plane \overline{ z } is the reflection of z in x-axis.

so,

<u>According</u><u> </u><u>to</u><u> </u><u>the</u><u> </u><u>question</u><u>, </u>

z\overline{z}=(-3+5i)(-3-5i)

\bold{(-3)^2-(5i)^2   }

\bold{9-25(-1)   }

\bold{ 9+25  }

\bold{ 34  }

Bess [88]3 years ago
4 0

Answer:

  • 34

Step-by-step explanation:

<u>Given</u>

  • z = -3 + 5i

<u>Conjugate of z is:</u>

  • z' = -3 - 5i

<u>Product zz' is:</u>

  • zz' = (-3 + 5i)(-3 - 5i) = (-3)² - (5i)² = 9 - 25(-1) = 9 + 25 = 34
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A salesperson is paid a weekly salary of $1000, plus a commission of 5% of all her sales for the week.
garri49 [273]

Answer:

A) Total weekly salary = $1000 + ( 0.05 × s )

B) Yes this is a function

C) This is a function because the weekly salary is dependent on the number of sales 's'. Hence, total weekly salary is a function of sales.

D) Domain will be [ 0, ∞ ]

Step-by-step explanation:

Given :

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Let the number of sales be 's'

thus,

A) Total weekly salary = $1000 + ( 0.05 × s )

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Hence,

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thus,

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4 years ago
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32 is the answer  I know this really well 
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