jennifersanchez19831 jennifersanchez19831
  • 19-04-2019
  • Mathematics
contestada

What is the solution of log2 (3x - 7) = 3?

Respuesta :

luisejr77
luisejr77 luisejr77
  • 19-04-2019

Answer:

[tex]x=5[/tex]

Step-by-step explanation:

We need to solve the equation for the variable x

Use the properties of logarithms.

[tex]2 ^ {log_2(x)} = x[/tex]

Then we have that:

[tex]2^{log2(3x - 7)} = 2^3[/tex]

So

[tex]3x -7 = 8[/tex]  add 7 to both sides

[tex]3x -7 +7 = 8+7[/tex]

[tex]3x = 15[/tex]   divide by 3 both sides of the equation

Therefore:

[tex]x = \frac{15}{3}[/tex]

Finally

[tex]x=5[/tex]

Answer Link
ataleese ataleese
  • 09-05-2020

Answer:

x=5 (c on edge2020)

Step-by-step explanation:

:)

Answer Link

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