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Zolol [24]
3 years ago
5

2 Points Which of the following is the coefficient in the algebraic expression 2x +y?

Mathematics
1 answer:
zubka84 [21]3 years ago
6 0

Answer:2

Step-by-step explanation:

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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
a = 3, b =  - 2
= 3^2 + (- 2)^2

refine: = 13
= 4(3 + 2i)/13

distribute parentheses:
a(b + c) = ab + ac
a = 4, b = 3, c = 2i
= 4(3) + 4(2i)

Simplify:
4(3) + 4(2i)
12    +    8i


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!!!
7 0
3 years ago
Any two lines lie in exactly one plane.<br><br> True<br> False
egoroff_w [7]
<u>Answer:</u> False

<u>Explanation / Counterexample:</u> Two lines in a 3-dimensional space can lie in two different planes. 
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Suppose you pick and replace marbles from a bag, one after another. If the bag contains 3 red marbles, 3 white marbles, and 6 bl
alexandr402 [8]

Answer:

I think you forgot part of the question

Step-by-step explanation:

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Someone please help me ASAP
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Find the area of a regular hexagon inscribed in a circle with a radius of 6 feet. Round to the nearest tenth.
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Answer:

93.5ft

Step-by-step explanation:

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