solve for x. 27^(2x)=9^(x-3) ...?

Answers

Answer 1
The answer is [tex]x = - \frac{4}{3} [/tex]

[tex] 27^{2x} = 9^{(x-3)} \\ (3^{3} )^{2x} = (3^{2}) ^{(x-3)} \\ \\ (x^{a} )^{b}= x^{a*b} \\  3^{3*2x} =3^{2*(x-3)} \\ 3^{6x} =3^{(2x-6)} [/tex]

Now, logarithm both sides of the equation:
[tex]log(3^{6x} )=log(3^{(2x-6)}) \\ \\ log (x^{a}) =a*log(x) \\ 6x*log(3)=(2x-6)*log(3)[/tex]

Divide both sides of the equation by log(3):
[tex]6x=2x-6 \\ 6x-2x = -6 \\ 4x = -3 \\ x = - \frac{4}{3} [/tex]

Related Questions

if susie is fourteen, what was her age x years ago?

Answers

Well it depends on what x is or how many years ago, but the equation would be 14 - x = y y being the age x years ago.

Selina claims single having one exemption. Her state tax deduction is 21% of her federal tax contribution. Calculate the amount of state tax Selina owes if her gross pay for two weeks is $840. The following federal tax table is for biweekly earnings of a single person.

Answers

Answer:  

$16.80

Step-by-step explanation:

Which expression is a cube root of 2?
A) Cube root of 2 (cos (120 degrees) + i sin (120 degrees))
B) Cube root of 2 (cos (40 degrees) + i sin (40 degrees))
C) Cube root of 2 (cos (280 degrees) + i sin (280 degrees)) ...?

Answers

I'm 100% sure that this is the expression which represents a cube root of 2: A) Cube root of 2 (cos (120 degrees) + i sin (120 degrees))

Answer with explanation:

[tex]z=2^{\frac{1}{3}}\\\\z^3=2\\\\z^3=2 \times (1 + 0 i)\\\\z^3=2 \times [\cos 0^{\circ} + i \sin 0^{\circ}]\\\\z^3=2 \times [\cos (2 k\pi+ 0^{\circ}) + i \sin(2 k\pi+0^{\circ})],where,k=0,1,2,\\\\z=[2\times[ (\cos (2 k\pi+ 0^{\circ}) + i \sin(2 k\pi+0^{\circ})]]^{\frac{1}{3}}\\\\z=2^{\frac{1}{3}}\times[\cos \frac{2 k\pi+ 0^{\circ}}{3} + i \sin\frac{(2 k\pi+0^{\circ})}{3}]\\\\Z_{0}=2^{\frac{1}{3}},for, k=0\\\\z_{1}=2^{\frac{1}{3}}\times[\cos \frac{(2\pi)}{3} + i \sin\frac{(2\pi)}{3}][/tex]

[tex]z_{1}=2^{\frac{1}{3}}\times[\cos(120^{\circ})+i\sin(120^{\circ})],\text{Used Demoiver's theorem}[\cos A + i\sin A]^k=\cos Ak + i\sin Ak[/tex]

Option A: →Cube root of 2 [cos (120 degrees) + i sin (120 degrees)]

What is the factorization of the trinomial below?

x2 - 10x + 25

A. (x - 25)(x + 1)
B. (x - 25)(x - 1)
C. (x - 5)(x - 5)
D. (x - 5)(x + 5)

Answers

C is the correct answer :))

Isabella paid one of her bill late and owed a 4% late fee was 780. How much was Isabella's original bill in dollar

Answers

The original bill amount that Isabella owed before the late fee was $19,500.

We need to understand the relationship between the late fee and the original bill amount.

Isabella was charged a late fee of 4% of the original bill amount, and this late fee was $780.

Let's use the variable x to represent the original bill amount. Since the late fee is 4% of the original bill, we can write the equation:

[tex]0.04x = 780[/tex]

To find x, we need to isolate it on one side of the equation. We can do this by dividing both sides of the equation by 0.04:

[tex]x = \frac{780}{0.04}[/tex]

Now, we can calculate this value:

[tex]x = 19500[/tex]

On a hike jason found a california king snake that was 42 inches long how many feet is that

Answers

the answer to this question is 3.5 feet

ending balance 1 59.75 outstanding deposits 175 .46 outstanding checks 231 .69 what is the balance

Answers

You Need To Create An Equation To Find Out The Ending Balance For This Story Problem.
Final answer:

To calculate the balance, add the outstanding deposits to the ending balance and subtract the outstanding checks.

Explanation:

To calculate the balance, we need to start with the ending balance and make adjustments for outstanding deposits and outstanding checks. First, add the outstanding deposits to the ending balance: 59.75 + 175.46 = 235.21. Next, subtract the outstanding checks from the previous result: 235.21 - 231.69 = 3.52. Therefore, the balance is $3.52.

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A real estate agent sells a house for $92,000. She receives a 6% commission on the sale of the house. How much did she earn on the sale? Round your answer to the nearest cent. Enter your answer in the box. $

Answers

It's literally just 92,000x.06

$5,520.00

HELP! A simplified version of sin2 θ (1 + cot2 θ) = 1 is ...?

Answers

The solution to the problem is as follows:

 LHS = sin^2 θ (1 + cot^2 θ) 
= sin^2 θ (1 + cos^2 θ/ sin^2 θ) 
= sin^2 θ + cos^2 θ 
= 1 
= RHS.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

Write a linear equation in slope intercept form to model a tree 4 feet tall the grows 3 inches per year

Answers

y = 3x + 48  where x is your number of years. I got 48 by multiplying 4 and 12 since there are 12 inches in a foot. (:
Final answer:

The linear equation that models the growth of a tree that is 4 feet tall and grows 3 inches per year is y = 3x + 48.

Explanation:

The problem involves writing a linear equation in slope-intercept form to model the growth of a tree. The slope-intercept form is given by the equation y = mx + b, where 'm' represents the slope or the rate of change, and 'b' is the y-intercept or the initial value.

In the context of this problem, the tree's initial height is 4 feet and it grows at a rate of 3 inches per year. However, the units of the initial height and the yearly growth rate are different, so we need to convert 4 feet into inches. As 1 foot is equivalent to 12 inches, the initial height of the tree is 4 * 12 = 48 inches.

Therefore, the slope or rate of change 'm' is 3 inches per year and the y-intercept or initial value 'b' is 48 inches. Substituting these values into y = mx + b gives us the linear equation representing the growth of the tree: y = 3x + 48.

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A bird flies from the bottom of a canyon that is 59 and three fifths

feet below sea level to a nest that is 609 and one fifth

feet above sea level. What is the difference in elevation between the bottom of the canyon and the​ bird's nest?

Answers

the difference in elevation between the bottom of the canyon and the nest is 668 and four fifths feet

Find the greatest common factor of the following monomials.
21g^3h 45g^3h^2

Answers

I hope this helps you

solve x ​2 ​​ −18x+81=0 for x

Answers

I hope this helps you

Which graph represents a linear function?

A coordinate plane is shown with a curved line that starts in the bottom left area of the graph, passing through the point -1 comma -5, curving to pass through the y-axis at 2.5, then curving up again to pass through the point 1 comma 5

A coordinate plane is shown with a line passing through the x-axis at negative 2 and the y-axis at negative 6.

A coordinate plane is shown with a parabola graphed in an upward U shape. The bottom of the parabola touches the y-axis at -10 and curves upward on both sides

A coordinate plane is shown with a wavy line that sits on the x-axis and moves across the graph in even up and down waves.

Answers

A linear function is a straight line. Therefore, the answer is #2.

Answer:

2nd Option is correct.

Step-by-step explanation:

We are given with four statements which describes a graph of a function.

We need to find the graph which represents the linear function.

Linear Function:

Linear functions are the functions whose graph are straight lines.

A linear function has the following form

y = f(x) = a + bx

A linear function has one independent variable and one dependent variable. The independent variable is x and the dependent variable is y.

So, In graphs of 1st , 3rd and 4th Options are curves not a straight line.

Only 2nd Option has graph which is straight as mentioned in it that a line passing through two points.

Therefore, 2nd Option is correct.

What's the numerator for the following rational expression? 8/y+3/y=?/y

Answers

ur answer would be 11/y
your answer is 11/y since the denominator is the same just add the 8 and 3  

5417 times 2.4 equals what

Answers

13000.8 when you multiply, remember to put the decimal in the correct place

A. 3x^2+2x-7
B. 3x^2+2x-3
C. 3x^2+8x+3
D. 5x^2+8x-7

Answers

I hope this helps you
answer is A. 3x^2+2x-7

4x^2+5x-2 - (x^2+3x+5)
=4x^2+5x-2 - x^2 - 3x - 5
=3x^2+2x-7

In rectangle ABCD, BC=30 and AB=40. If diagonals AC and BD intersect at E, find the measure of BE.

Answers

Final answer:

To find the measure of BE in rectangle ABCD, we can use the properties of a rectangle and similar triangles. By using the Pythagorean theorem, we find the length of the diagonal AC. Then, we use the properties of similar triangles to calculate the length of BE.

Explanation:

To find the measure of BE, we can use the properties of a rectangle. In rectangle ABCD, the diagonals are equal in length and bisect each other. Therefore, we can use the Pythagorean theorem to find the length of the diagonal AC: AC^2 = AB^2 + BC^2. Plugging in the values given, AC^2 = 40^2 + 30^2 = 2500, so AC = sqrt(2500) = 50. Since the diagonals bisect each other, we can conclude that AE = 50/2 = 25. Now, we can use the properties of similar triangles to find the length of BE. Triangle ABE is similar to triangle ACE, so we can set up the following proportion: AB/AC = BE/AE. Plugging in the values, 40/50 = BE/25. Solving for BE, we get BE = (40/50) * 25 = 20.

Final answer:

To find the measure of BE in rectangle ABCD, we use the Pythagorean Theorem. As the diagonals bisect each other, BE is half the length of diagonal AC, resulting in BE = 25.

Explanation:

In rectangle ABCD with BC=30 and AB=40, the diagonals bisect each other. That means E, the point of intersection, is the midpoint of both diagonals AC and BD. Since ABCD is a rectangle, its diagonals are equal, and AC = BD. To find BD, we use the Pythagorean Theorem in ΔABC:

AC² = AB² + BC²AC² = 40² + 30²AC² = 1600 + 900AC² = 2500AC = √2500AC = 50

Since E is the midpoint of BD, BE is half the length of BD:

BE = BD/2BE = AC/2 (because AC = BD)BE = 50/2BE = 25

What is the rational number equivalent to

Answers

Rational expressions are multiplied and divided the same way numeric fractions are. To multiply, first find the greatest common factors of the numerator and denominator. Next, regroup the factors to make fractions equivalent to one. Then, multiply any remaining factors.

CD is perpendicular to AB and passes through point C (5,12).

If the coordinates of A and B are (-10, -3) and (7, 14), respectively, the x- intercept of CD is:

(12, 0)
(15, 0)
(17, 0)
or (19,0).

The point:

(-5, 24)
(-2, 19)
(7, -10)
or (8, 11)

lies on CD.

Answers

The slope of AB is
[tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
[tex]=\frac{14-(-3)}{7-(-10)}[/tex]
[tex]=\frac{17}{17}[/tex]
[tex]=1[/tex]

So the slope of CD is
[tex]-\frac{1}{m}=-\frac{1}{1}=-1[/tex]

The equation for CD is then
[tex]y=-x+b[/tex]
We find [tex]b[/tex] by plugging in the point [tex](5, 12)[/tex]:
[tex]12=-5+b[/tex]
[tex]\rightarrow b=17[/tex]
[tex]\rightarrow y=-x+17[/tex]

The x-intercept is found by setting [tex]y[/tex] equal to 0:
[tex]0=-x+17[/tex]
[tex]\rightarrow x=17[/tex]
which gives [tex](17, 0)[/tex].

For the second part, we just plug in the different points and see if the equation is true:
[tex](-5, 24)\rightarrow 24=-(-5)+17\rightarrow 24=5+17\rightarrow 24=22[/tex]
(doesn't work)
[tex](-2, 19)\rightarrow 19=-(-2)+17\rightarrow 19=2+17\rightarrow 19=19[/tex]
So the answer must be [tex](-2, 19)[/tex].

Answer

CD is 17,0

The point -2,19

Step-by-step explanation:

The area of one face of a cube is 7 cm2. what is its surface area?

Answers

The answer to this is 42 cm^3

Varia is studying abroad in Europe. She is required to pay $3500USD per year to the university, however she must pay in euros. How many euros can Varia expect to pay per month to the university? (Round to the nearest whole euro.)

0.7306 euros = 1 US dollar

Answers

The answer would be 274.46 euros a month.

An elliptical track has a major axis that is 80 yards long and a minor axis that is 72 yards long. Find an equation for the track if its center is (0, 0) and the major axis is the x-axis.

Choices are in the attachment

Answers

Answer:

So basically it’s D

Step-by-step explanation:

:)

Write a justification for each step.

Answers

Step 1. Segment Addition Postulate

Step 2. Substitution

Step 3. Combine like terms

Step 4. Additive Property of Equality

Step 5. Subtraction Property of Equality

Step 6. Division Property of Equality

1/5 (7-3b) > 2
which of the following gives all values of b that satisfy the inequality above?
A) b< -1
B) b> -1
C) b< 1
D) b> 1

Answers

The value of b that satisfy the inequality are; B) b> -1 and C) b< 1

What is inequality?

Inequality is defined as the relation which makes a non-equal comparison between two given functions.

We have given an inequality;

1/5 (7-3b) > 2

To solve for b;

(7-3b) = 10

-3b = 10 - 7

-3b = 3

b = -3/3

b = -1

Thus, the value of b that satisfy the inequality are; B) b> -1 and C) b< 1

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The correct solution for the given inequality 1/5 (7-3b) > 2 gives us b < -1. Option A is correct.

The given inequality is 1/5 (7-3b) > 2. To find the range of values for b that satisfy this inequality, follow these steps:

Multiply both sides of the inequality by 5 to eliminate the fraction: 7 - 3b > 10.

Subtract 7 from both sides of the inequality: -3b > 3.

Since we are dividing by a negative number, remember to reverse the inequality sign: b < -1.

Therefore, the correct answer is b < -1, which is option A.

The area of a square is found by squaring one of its sides, (A = s 2). A certain square has an area of z 2 + 18z + 81. Factor the trinomial to find a side of the square.

A.) side = z + 27
B.) side = z + 18
C.) side = z + 9

Answers

the answer is c =z+9

Answer:

C.) side = z + 9

Explain a thought process you might use when trying to find the additive or multiplicative inverse of a number or expression. ...?

Answers

Definition of additive inverse.- If two numbers are added together and the sum is zero, they are the additive inverse of each other. 


......................................... IF A + B = 0 , they are the additive inverse of each other. 


Multiplicative Inverse.- If two numbers are multiplied together and the product is one. They are the multiplicative inverse of each other, also called reciprocal. 

......................................... A.B = 1 , they are the multiplicative inverse of each other. 


Example of: 

Additive inverses :................ 5 + ( - 5 ) = 0 

Multiplicative inverses...........5 x 1/5 = 1 

state the degree x^3y^2+7x^2y^5-3xy^8

Answers

the main formula for a polynomial ax^my^n+...
the degree is the sum of the highest degree of the polynomial, it is m+n

the degree of  x^3y^2+7x^2y^5-3xy^8 is 9, because 3xy^8 is the term where we can find a highest value of power (8)
so the degree is degree of x, it is 1 + degree of y (it is 8)

Answer:9

Step-by-step explanation:

What is the r value of the following geometric sequence? 4, 7, 12.25, 21.4375.

Answers

to find the common ratio (r) divide the second term by the first term
7 / 4 = 1.75 <==

Answer:

r ( common ratio) = 1.75

Step-by-step explanation:

Given : geometric sequence 4, 7, 12.25, 21.4375.

To find : What is the r value .

Solution : We have given

Geometric sequence 4, 7, 12.25, 21.4375.

r ( common ratio) = [tex]\frac{second\ term}{first\ term}[/tex].

r ( common ratio) = [tex]\frac{7}{4}[/tex] = 1.75

r ( common ratio) = [tex]\frac{12.25}{7}[/tex] = 1.75

Therefore, r ( common ratio) = 1.75

All real numbers that are greater than or equal to -1.5 and less than 9.2

Answers

So in order to answer this, let us put x as the real numbers. So based on the given values above, we can represent x this way:  −1.5 ≤x <9.2
Negative 1.5 is less than or equal to x and 9.2 is greater than or equal to x. Hope this is the answer that you are looking for. 

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