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irinina [24]
3 years ago
14

Multiple choice: 

Mathematics
1 answer:
Paha777 [63]3 years ago
7 0
In the given you wrote -2, whereas it should be -2i

z = a + bi and in trigo form | z |.(cos Ф + i.sin Ф).
z = 0 -2i → | z |.(cos Ф + i.sin Ф)
Now let's calculate z:
 
z² = a²+b² → z² = 0² (-2.i)² → z = -2(i)² →z= -2(-1) → z = |2|
tan Ф = b/a = -2/0 → tan Ф → - ∞ ↔ Ф = -90° or Ф = 270°
 then the - 2 I ↔ |2|(cos 270° + i.sin 270°)

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3 0
3 years ago
After putting $5,500 as a down payment on a car, you pay $400 per month for 60 months to pay off your car. What was the total yo
Y_Kistochka [10]

Answer:

$29500

Step-by-step explanation:

Given data

The number of months is 60

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7 0
3 years ago
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Answer:

umm  6.0?

Step-by-step explanation:

7 0
2 years ago
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6 0
3 years ago
Which expressions are equivalent to -6 +49 +(-6q)?<br> Choose all answers that apply:
Sidana [21]

Answer:

C, none of them are equivalent

BECAUSE

For A, the -4q should be positive 4q to apply

For B, the 2q when distributing with the parentheses should be negative 2q to work with the expression above

Hope this helps!

8 0
3 years ago
Read 2 more answers
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