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 is 3/a = 9/8 equal
What is the property x?
Pleassssseeee help!!!!! 40 points to whoever answers righttttt
Leah flips a coin, and then she spins the pointer on a spinner with equal sections of red, green, and blue. Which of the following is a compound event? Select a
Smoking remains more common in much of europe than in the united states. in the united states, there is a strong relationship between education and smoking: wel
WILL GIVE BRAINLIEST! Describe what happens in the rock cycle and use an example to illustrate your explanation.
need this badly!!!!!!
how many diffrent four digit numbers can be made using the digits 1 2 3 4 5 6 if no digit can be used more than once​
Barriers to entry into a market come in many forms. Which lists some of the usual barriers to entry?
Read the prompt and answer the questions below it. Por fin, llego el ultimo dia de la escuela y Rebeca esta muy feliz. Para ella este ano ha sido muy dificil y