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AlladinOne [14]
3 years ago
7

Problem is in the attached picture. Thanks in advance!

Mathematics
1 answer:
bogdanovich [222]3 years ago
6 0

Answer:

Width= 120 ft

Length= 285 ft

Step-by-step explanation:

W= width and (3w-75)= length since it's 75 less than 3 times the width

w+w+(3w-75)+(3w-75)=810

8w-150=810

8w=960

w=120

So the width is 120 ft

Then substitute the 120 in for w in the length

L= 3(120)-75

L=360-75

L=285

So the length is 285 ft

You can check because 120+120+285+285=810, and because 120×3-75=285!

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Simplify the following expression below:
IrinaK [193]
So, 4/3 - 2i

4/3 - 2i = 12/13 + i8/13

multiply by the conjugate: 
3 + 2i/3 + 2i
= 4(3 + 2i)/(3 - 2i) (3 + 2i)
(3 - 2i) (3 + 2i) = 13

(3 - 2i) (3 + 2i)

apply complex arithmetic rule: (a + bi) (a - bi) = a^2 + b^2
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refine: = 13
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distribute parentheses:
a(b + c) = ab + ac
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= 4(3) + 4(2i)

Simplify:
4(3) + 4(2i)
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4(3) + 4(2i)
Multiply the numbers: 4(3) = 12
= 12 + 2(4i)

Multiply the numbers: 4(2) = 8
= 12 + 8i


   12 + 8i
= 12 + 8i/13

Group the real par, and the imaginary part of the complex numbers:


Your answer is: 12/13 + 8i/13





Hope that helps!!!
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3 years ago
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snow_tiger [21]

Answer:

Step-by-step explanation:

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Answer:

C

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2yA=2y+3z−3z

Combina 3z y −3z para obtener 0.

2yA=2y

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y

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=  

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y

​

 

Al dividir por y, se deshace la multiplicación por y.

A=  

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