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nika2105 [10]
2 years ago
13

6. At one point, there were only 2,410

Mathematics
1 answer:
Sedbober [7]2 years ago
8 0
<h3>Answer:</h3>

5543 rhinos.

<h3>Explanation:</h3>

present population: total population(100% + increased percentage)

<em>Based on the information, insert following </em>:

Black Rhinos = 2410(100% +130%) = 2410(230%) = 2410(2.3) = 5543

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Step-by-step explanation:

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2 years ago
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 ...

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_____

<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).

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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
How many 1/4 inch cubes does it take to fill a box with width 3 1/4 inches, length 4 1/2 inches, and height 2 3/4 inches?
Anastaziya [24]
1. 15 2. 18. 3. 11 is right
4 0
3 years ago
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xenn [34]

Answer:

5/27

Step-by-step explanation:

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In an aquiarium, there are 7 large fish and 6 small fish. Half of the small fish are red. One fish is selected at random. Find t
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Step-by-step explanation:

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