rose831
rose831 rose831
  • 04-01-2020
  • Mathematics
contestada

If Log x (1 / 8) = - 3 / 2, then x is equal to.

A. - 4
B. 4
C. 1 / 4
D: 0

Respuesta :

nonsibi
nonsibi nonsibi
  • 04-01-2020

[tex]log_{x}(1/8)=-3/2[/tex]

This is equal to...

[tex]x^{-3/2}=1/8[/tex]

We want "x" so we need to isolate it using laws of exponents...

[tex]x^{(-1)(3/2)}=1/8[/tex]

[tex]x^{3/2}=8[/tex] because [tex]x^{-a}=1/x^{a}[/tex]

[tex]x=\sqrt[3]{8^{2}}[/tex] because [tex]x^{a/b}=\sqrt[b]{x^{a}}[/tex]

x = 4

answer: B

Answer Link

Otras preguntas

What best explains the problem with installment buying ?
Solve this question while factoring x²+ 10x+25=0
Three ways to prevent teachers strikes
State whether your hypothesis was supported or rejected by your data and why. Based on your lab results and your prior knowledge, what do you think is going on
How many solutions does the system of equations below have? 2x + y = 3 8x + 4y = –11
3 4 6 13 16 19 ◄)) and Submit have a sum of 25
For Aristotle, what is the difference between intellectual and moral virtues? What sorts of intellectual virtues are there, and how do people come to acquire th
What is a comprehensive clinical vocabulary designed to encompass all terms used in health care?
Which is the correct thesis of your brain on movies
Which value represents the slope of the line that has an x-intercept at (-4,0) and a y-intercept at (0,-12) in the coordination plane?