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Alchen [17]
3 years ago
7

Solve for u. -2 (2u- 4) + 2u= 4 (u+3)

Mathematics
1 answer:
Gala2k [10]3 years ago
5 0

Answer:

-2/3

Step-by-step explanation:

or -0.666...

hope I could help

please vote brainliest

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PLEASE HELP 20+ POINTS!! What is the cosine equation of the function shown?
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Answer:   \bold{y=7\ \cos\bigg(x-\dfrac{\pi}{4}\bigg)-4}

<u>Step-by-step explanation:</u>

y = A cos (Bx - C) + D

  • A (amplitude) = max - D
  • B = Period/2π  --->   Period is the distance from max to next max
  • C = B · Phase Shift  ---> Phase shift is distance from y-axis to max
  • D (vertical shift) = (max + min)/2

D = (max + min)/2     =     (3 - 11)/3      =  -4

A = max - D               =     3 - (-4)         = 7

Period = 9π/4 - π/4   =    8π/4            = 2π

B = Period/2π           =    2π/2π          = 1

Phase Shift = π/4 - 0 =     π/4

C = B · Phase Shift    =  1 · π/4            = π/4

Equation:

           y = 7 cos (1·x - π/4) + (-4)

               

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3 years ago
What is the degree of the polynomial 5z^3+2z+1
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Use Descartes rule to determine the possible number of positive and negative solutions for the polynomial: f(x)=10x^4-21x^2+11​
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Answer:

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Step-by-step explanation:

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