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Rainbow [258]
3 years ago
11

-10b = 100 What’s awnser

Mathematics
2 answers:
ohaa [14]3 years ago
8 0

Answer:

b=-10

Step-by-step explanation:

divide each term by -10 to get your answer

Reika [66]3 years ago
7 0

Answer:

b= -10

Step-by-step explanation:

Divide -10 from both sides to get b alone

hope this helps :)

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A school has 600 pupils. 1/5 are in the upper school, 1⁄4 in the middle school and
crimeas [40]

Step-by-step explanation:

the number of pupils are in the lower school

= (1- 1/5 - ¼) × 600

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3 years ago
Write the complex number in polar form:
emmasim [6.3K]

9514 1404 393

Answer:

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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).

__

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.)

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3 years ago
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Answer:

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if u multiply 32 times 4 u get 128 but if u subtract them u get 28

but if u divide them then u get 8 but if u also add them u get 36

7 0
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Emily's meal coats $32.75 and Darren's meal costs $39.88. Emily treats Darren by paying for both meals and leaving an 18% tip. W
Ivahew [28]
45.827 or 45.83 dollars...............
8 0
2 years ago
Read 2 more answers
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