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

9,000ib= how many ton
Should rice be washed before cooking? always, sometimes, or never? discuss.
Which is the most reasonable estimate for the depth of a lake 6 mm 6 cm or 6m explain?
what effect did Charles Darwin’s theory have on biology?
The ratio of two complementary angles is 7 to 3. what are the angles?
Why is partitioning a direct line segment of 1:3 not the same as finding 1/3 the length of the direct line segment
PLEASE HELP ME, DESPERATE. WILL GIVE BRAINLIEST !! Read this sentence from the passage. There is, first, the New York of the man or woman who was born here, who
How did WW2 affect civilians?
A 36.0 kg crate starting from rest is pulled across a floor with a constant horizontal force of 225 n. for the first 11.0 m the floor is frictionless, and for t
Where is the largest reservoir of carbon on earth located?