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Alexeev081 [22]
3 years ago
13

at 4:00 p.m a palm tree casts a shadow of 27 feet while 4 foot bird of paradise plant nearby a shadow is 3 feet

Mathematics
1 answer:
Serga [27]3 years ago
6 0
By similar triangles...

p/27=4/3

p=36ft
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Solve the system of equations 5x+9y+9z=5 4x+9y+6z=10 2x+2y+5z=9
erma4kov [3.2K]

Answer:

{x,y,z} = {-116,28,37}

Step-by-step explanation:

// Solve equation [3] for the variable  z  

 

 [3]    5z = -2x - 2y + 9

 [3]    z = -2x/5 - 2y/5 + 9/5

__________________________________________________________

// Plug this in for variable  z  in equation [1]

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  [1]    7x + 27y = -56

__________________________________________________________

// Plug this in for variable  z  in equation [2]

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  [2]    8x/5 + 33y/5 = -4/5

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__________________________________________________________

// Solve equation [2] for the variable  y  

 

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__________________________________________________________

// Plug this in for variable  y  in equation [1]

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  [1]    5x/11 = -580/11

  [1]    5x = -580

__________________________________________________________

// Solve equation [1] for the variable  x  

  [1]    5x = - 580  

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__________________________________________________________

// By now we know this much :

   x = -116

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   z = -2x/5-2y/5+9/5

__________________________________________________________

// Use the  x  value to solve for  y  

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__________________________________________________________  

// Use the  x  and  y  values to solve for  z  

 z = -(2/5)(-116)-(2/5)(28)+9/5 = 37

╦────────────────────────────╦

│Hope this helped  _____________________│    

│~Derelis ____________________________ │

╨___________________________________╨                  

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