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valentinak56 [21]
3 years ago
11

Please answer quick first get 5 stars and 20 points

Mathematics
1 answer:
Art [367]3 years ago
3 0
It’s A. Because if you flip it it still is the same just reflected to the other side, I’m almost positive it’s A.
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Write the complex number in polar form:
emmasim [6.3K]

9514 1404 393

Answer:

  2√30 ∠-120°

Step-by-step explanation:

The modulus is ...

  √((-√30)² +(-3√10)²) = √(30 +90) = √120 = 2√30

The argument is ...

  arctan(-3√10/-√30) = arctan(√3) = -120° . . . . a 3rd-quadrant angle

The polar form of the number can be written as ...

  (2√30)∠-120°

_____

<em>Additional comments</em>

Any of a number of other formats can be used, including ...

  (2√30)cis(-120°)

  (2√30; -120°)

  (2√30; -2π/3)

  2√30·e^(i4π/3)

Of course, the angle -120° (-2π/3 radians) is the same as 240° (4π/3 radians).

__

At least one app I use differentiates between (x, y) and (r; θ) by the use of a semicolon to separate the modulus and argument of polar form coordinates. I find that useful, as a pair of numbers (10.95, 4.19) by itself does not convey the fact that it represents polar coordinates. As you may have guessed, my personal preference is for the notation 10.95∠4.19. (The lack of a ° symbol indicates the angle is in radians.)

6 0
3 years ago
Which table shows a proportional relationship between x and y? please help and answer quick plz
gavmur [86]
The answer is c. 

(a)

x * 2 = y
2 * 2 = 4 
3 * 2 = 6
4 * 2 = 8 not 9

(b)

unknown formula

(c)

x * 3 = y
4 * 3 = 12 
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6 * 3 = 18

(d)

x * 4
1 * 4 = 4
2 * 4 = 8
3 * 3 = 9 not 15
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3 years ago
Haley draws a picture to show 8 / 2 which picture could be Haley's
goldfiish [28.3K]

Answer:

..   ..

..   ..

Step-by-step explanation:

8/2=4

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3 years ago
Find the height (h) of the triangle shown.
WARRIOR [948]
B
i think with is the correct ansuer


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3 years ago
Add and subtract the following fractions. Remember to find the LCD first.
Sever21 [200]

11. 345,000

12. 128,000

13. 42.5

14. 39.6

15. $365.47; $365

16. $125.65; $126

4 0
3 years ago
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