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

the night thoreau spent in jail what job does henry agree to perform for the emersons
I NEED HELPPO NOWWW PLEASEEE!!
By which of the following can movement of materials across animal cell membranes be accomplished? I Active transport II Diffusion III Pinocytosis a) I only b) I
Write a letter to your mother asking for Some money to buy winter clother. ​
who was the resident of usa in1983
The interior angle of a regular polygon is 19 times the size of the exterior angle. calculate the size of the interior angle and the number of sides the polygon
Use and misuse of mobile phone essay
The interior angle of a regular polygon is 19 times the size of the exterior angle. calculate the size of the interior angle and the number of sides the polygon
what is the we speak in French ​
........ami s' appelle Jean (mon-ma-mes)​