reddragon18tjp7tm45
reddragon18tjp7tm45 reddragon18tjp7tm45
  • 21-04-2021
  • Mathematics
contestada

Determine the solution and indicate the restrictions on the variable.

Determine the solution and indicate the restrictions on the variable class=

Respuesta :

TehGOD
TehGOD TehGOD
  • 21-04-2021

Answer:

B

Step-by-step explanation:

Subtract 20 from both sides:

[tex]-\sqrt{9-8x} =-15[/tex]

Divide both sides by -1:

[tex]\sqrt{9-8x} =15[/tex]

Square both sides:

[tex]9-8x=255[/tex]

Subtract 9 by both sides:

[tex]-8x=216[/tex]

Divide both sides by -8:

[tex]x=-27[/tex]

That means that either a or b is correct and since 9/8 is positive that means it needs to bee less than 9/8 so the correct answer is B

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