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 were the four main causes of the Cold War
when the Lenape hunted
use the function rule, y= 2x+5, to find the values of y when x =1,2,3,4. write the answers as ordered pairs that would be used to graph the function. show your
rewrite the expression without using a negative exponent 6m^-2
use the function rule, y= 2x+5, to find the values of y when x =1,2,3,4. write the answers as ordered pairs that would be used to graph the function. show your
A wet towel is hanging on a clothesline in the sun. What process does the towel dry by?
Slope= 1/5, y-intercept=1
a long distance telephone company charges a rate of 8 cents per minute or 90 cent mininum charge per call, whichever is greater. Find the cost in cents per minu
In scienceclass the teacher measured 800 milligramns of an chemical.How manyn grams is it.
Can anyone help me with turning fractions into decimals 2 1/2