10.
x- 8y= 17
--3x + 24y=-51
Solve by substitution

[1]    x - 8y = 17

  [2]    -3x + 24y = -51

Step-by-step explanation:

// Solve equation [1] for the variable  x  

 [1]    x = 8y + 17

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

  [2]    -3•(8y+17) + 24y = -51

  [2]    0 = 0 =>  Infinitely many solutions

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b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

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