Log81 1/9= need help with this

Answers

Answer 1

Answer: If it is log 81 base 1/9=x, then you can make the following equation
(1/9)^x=81
x=-2
in this case since 9 squared is 81 and you need to flip the fraction so you add a negative,
Hope this helps.

Answer 2

Answer: $log_(81)(\frac{1}9})$
$81^(x) = (1)/(9)$
$ln(81^(x)) = ln((1)/(9))$
$x\ln(81) = ln((1)/(9))$
$(x\ln(81))/(ln(81)) = (ln((1)/(9)))/(ln(81))$
$x = (ln((1)/(3))^(2))/(ln(3)^(4))$
$x = (2ln((1)/(3)))/(4ln(3))$
$x = (ln((1)/(3)))/(2ln(3))$
$x = (-ln(3))/(2ln(3))$
$x = -(1)/(2)$

Related Questions

A quiz has 50 multiple choice questions. Each question has 3 possible answers, one of which is correct. A correct answer is worth 2 points, but a point is taken off for each incorrect answer. A student answers all 25 questions by guessing at random. In each case present the problem with an appropriate box model. Find the expected value and the standard error for the sum of 25 draws. Interpret this sum in terms of the scores.
The pair of points is on the graph of an inverse variation. Find the missing value (2,8) (x,3)
2x+4y=12 y=0.25x-3 What is the solution to the system of equations?(–1, 8) (8, –1) (5,1/2) 0r (1/2,5)
Suppose the heights of the members of a population follow a normal distribution. If the mean height of the population is 68 inches and the standard deviation is 4 inches, 99.7% of the population will have a height within which of the following ranges?A. 56 inches to 80 inches B. 60 inches to 76 inches C. 64 inches to 72 inches D. 52 inches to 84 inches
3(2x + 1 ) = 2(x + 1) + 1

What is x for number 14.

Answers

It's a right triangle. So

(x²) + (10²) = (7+x)²

x² + 100 = 49 + x² + 14x

That may look ugly, but I'm pretty sure you can handle it from this point.

Wow ! I just noticed that you can subtract x² from each side
and not even have to mess with it again.

x^2 $(x+7)^2=x^2+10^2x^2+14x+49=x^2+10014x+49=10014x=51x=3.64$

What is the solution to the system of equations? y = 1/2x-6 and x=-4

Answers

All you have to do is plug -4 for x

y = 1/2 * -4 - 6

y = -8

Solution: (-4, -8)

6a-5b=9 2a+5b=23 using the addition method

Answers

Answer:

a = 4

b = 3

:))

Which function represents the number of seconds, s, in d days? (Hint: The number seconds in a day is 24 × 60 × 60 = 86,400.). The function that represents the number of seconds, s, in d days is f(d) =

Answers

You simply multiply the days with the number of seconds in a day.
f(d) = 86400d.
I hope that this is the answer that you were looking for and it has helped you.

Answer: f(d) = 86,400d

Can you factor 30 X square minus 5X to the third

Answers

30x^2 - 5X^3 = 5*6*x^2 - 5*x^2*x = 5x^2( 6 - x ).

What is the volume of the prisim show below .

8 6 10

Answers

6 * 8 * 10 = 480 is the volume of the prisim.

Other Questions

Rename the percent as a simplified fraction or mixed number. 1.) 30% 2.)150%

A rectangular prism has a length of 2x^2+2x-24 over 4x^2+x, a width of x^2+x-6 over x+4, and a height of 8x^2+2x over x^2-9. For all values of x for which it is defined , express, in terms of x, the volume of the prism in simplest form.1. 4(x-2)2. 2(x-2)3.2(x+2)4.4(x+2) please show work.

Solve for “?” by finding a pattern that utilizes every number within each arrangement. The third arrangement will have the same pattern as the first two arrangements. 3 9 8 6 =14 10 2 7 3=16 11 8 17 4 =? "? can be 19,30, 22 or 32"

Set up a proportion to solve for x in the following similar triangles.