Log3+log9+log27+log81+...... Question: how many terms of the section log2187?

Answers

Answer 1

Answer:

7th term.

Step-by-step explanation:

The given series is

[tex]\log 3+\log 9+\log 27+\log 81+...[/tex]

We need to find the number of term log 2187.

Here, terms inside the log are 3, 9, 27, 81, ... are in G.P.

First term = 3

Common ratio [tex]=\dfrac{9}{3}=3[/tex]

nth term of a G.P. is

[tex]a_n=ar^{n-1}[/tex]

where, a is first term and r is common ratio.

[tex]2187=3(3)^{n-1}[/tex]

Divide both sides by 3.

[tex]729=(3)^{n-1}[/tex]

[tex]3^6=(3)^{n-1}[/tex]

On comparing both sides, we get

[tex]n-1=6[/tex]

[tex]n=7[/tex]

Since 7th term of the G.P. 3, 9, 27, 81, ... is 2187, therefore, 7th term of [tex]\log 3+\log 9+\log 27+\log 81+...[/tex] is log 2187.


Related Questions

Select the interval where h(x)>0 {where h of x is greater than 0}
Option1. -3.5 Option2. -2 Option3. 2.5

Answers

Answer:

The correct option is;

Option 3. 2.5

Step-by-step explanation:

From the graph of the function y = h(x), where h of x h(x) > 0 and x > 0 we have;

The first interval where y =h(x) > 0 occurs between x= 0 and x = 0.8

The second interval where y =h(x) > 0 occurs between 2.2 and 4 which is a range of 4 - 2.3 = 1.7

The total interval where y =h(x) > 0 occurs is therefore = 0.8 + 1.7 = 2.5

Thus the function y = h(x), is positive over an interval on the x-axis = 2.5.

Answer:

Option 3. 2.5

Step-by-step explanation:

The figure is not drawn to scale. PQ and MN are straight lines. Find

Answers

Answer:

a = 138

Step-by-step explanation:

Notice that from the figure, we can see that ∠MOQ and ∠PON are vertical angles, which means that by definition, they're congruent in measure.

∠MOQ = ∠MOR + ∠ROQ = 90 + 48 = 138°

So, this means that ∠PON is also equal to 138, which means a = 138.

Thus, the answer is a = 138.

~ an aesthetics lover

Need help again ?!???

Answers

Answer:

11.47

Step-by-step explanation:

Use SohCahToa. In this problem, you are given the hypotenuse and you are trying to solve for the adjacent side so it will be cosine. (cosine = [tex]\frac{adjacent}{hypotenuse}[/tex])

1. set up the equation

cos55 = [tex]\frac{x}{20}[/tex]

2. Multiply both sides by 20 to solve for x

20 · cos55 = 11.47

Answer:

11.47

Solution,

From the figure,

[tex]cos \: 55 = \frac{PQ}{PR} [/tex]

[tex]cos \: 55 = \frac{PQ}{20} [/tex]

[tex]PQ = 20 \: cos \: 55[/tex]

[tex]PQ= 11.472[/tex]

[tex]PQ= 11 .47[/tex]

Hope this helps...

Good luck on your assignment...

g(x) = 4x + 1

What is g(3)?
————————————-
A. 13
B. 16
C. 12
D. 8

Answers

Answer:

A. 13.

Step-by-step explanation:

g(x) = 4x + 1

g(3) = 4 * 3 + 1 = 12 + 1 = 13

A. 13 is your answer.

Hope this helps!

Answer:

13

Step-by-step explanation:

g(x) = 4x + 1

Let x=3

g(3) = 4*3+1

      = 12+1

    = 13

Translate into an algebraic expressions: 120 is increased by d% and increased by 25% . What is the result ?

Answers

Answer:

The result is 150 + 1.5d

Step-by-step explanation:

We want to translate the wordings into algebraic expression.

Firstly, we increase 120 by d%

d% = d/100

So increasing 120 by d % means;

120 + (d/100 * 120)

= 120 + 1.2d

Then increase this by 25%

= (120 + 1.2d) + 25/100(120 + 1.2d)

= 120 + 1.2d + (120+1.2d)/4

= 120 + 1.2d + 30 + 0.3d

= 120 + 30 + 1.2d + 0.3d

= 150 + 1.5d

Describe the effect of pollution on the environment​

Answers

Answer:

Hello!

~~~~~~~~~~~~~~~~~

Pollution needs to be dramatically reduced because it is destroying the environment we live in, contaminating our food and water, causing diseases and cancers in humans and wildlife, and destroying the air we breathe and the atmosphere that protects us from harmful ultra-violet radiation.

Step-by-step explanation: This the wrong subject but here is the answer.

Hope this helped you! Brainliest would be nice!

Answer:

Answer:

Step-by-step explanation:

Due to pollution many diseases can occur to u...... So we should stop using fuel in vehicles and instead use compressed natural gas (CNG)..... And before sewage water is released into oceans hey should be treated with chemicals...... That's all...

Hope this answer helps.....

need help asap!!! WILL GIVE THE MOST BRAINIEST TO WHOEVER ANSWERS IT RIGHT PUT THE ANSWER IN A BOX

Answers

Answer:

36PI

113.04

Step-by-step explanation:

4/3*PI*R^3=V

4/3*PI*27=V

36*PI=V

113.04

BRAINLIEST PLS

              -ZYLYNN JADE

Answer:

113.10 (to the nearest hundredth)

Step-by-step explanation:

just google volume of a sphere

BRAINLIEST What is the volume of the right triangular prism, in cubic meters? Round to the nearest cubic meter.


1,771
2,071
3,542
4,143

Answers

Answer:

The answer to this would most likely be the first option: A. 1,771

Step-by-step explanation:

I've seen the question before.

The volume of the right triangular prism is 1771  cubic meters

What is the volume of a right triangular prism?

The volume of a right triangular prism can be estimated by using the formula:

[tex]\mathbf{V = \dfrac{1}{2} \times b \times h \times l}[/tex]

where;

b = base length of the triangle = 14h = height of the triangle = 23l = length of the prism = 11

[tex]\mathbf{V = \dfrac{1}{2} \times 14 \times 23 \times 11}[/tex]

V = 1771 m³

Learn more about calculating the volume of a right triangular prism here:

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Again. I need help with this

Answers

Answer:

Option B.

Step-by-step explanation:

Scale factor of the image = [tex]\frac{\text{One side of the triangle FED}}{\text{Corresponding side of the triangleABC}}[/tex]

                                          = [tex]\frac{\text{DF}}{\text{AC}}[/tex]

                                          = [tex]\frac{3}{6}[/tex]

                                          = [tex]\frac{1}{2}[/tex]

Coordinates of point C → (-2, 2)

Coordinates of the corresponding point C' after dilation with a scale factor [tex]\frac{1}{2}[/tex],

C(-2, 2) → C'(-1, 1)

Coordinates of point C' after reflection across y-axis,

C'(-1, 1) → C"(1, 1)

Followed by the translation of 2 units downwards,

C"(1, 1) → D[1, (1 - 2)]

          → D(1, -1)

From the graph we get the same coordinates of point D as (1, -1).

Therefore, ΔABC was dilated by a scale factor of [tex]\frac{1}{2}[/tex], reflected across the y-axis and moved through the translation of 2 units downwards.

what is teh surface area of a rectangular prism, if its length is 17 meters, its width is 2 meters and its height is 3 meters

Answers

Answer:

102m^2

Step-by-step explanation:

2x3x17=102m^2

can u pls mark brainliest :)

Answer:

182 m²

Step-by-step explanation:

The formula for surface area of a rectangular prism is;

Surface Area = 2(wl) + 2(lh) + 2(hw) where w is the width, l is the length and h is the height.

SA = 2(2 * 17)m² + 2(17 * 3)m² + 2(3 * 2)m²

     = 2(34)m² + 2(51)m² + 2(6)m²

     = 68 m²  + 102 m² + 12 m²

     = 182 m²

Find the slope of the line

Answers

Answer:

3/2

Step-by-step explanation:

Using two points we can find the slope of a line

(0,1) and  (2,4)

The slope is given by

m= (y2-y1)/( x2-x1)

   = (4-1)/(2-0)

   = 3/2

Solve for x 4x−8=3x−8

Answers

Answer:

x = 0

Step-by-step explanation:

Step 1: Subtract 3x from both sides

x - 8 = 8

Step 2: Add 8 to both sides

x = 0

Answer:

x = 0

Step-by-step explanation:

1. Get rid of the equal terms

4x = 3x

2. Move the variables to the left side

4x - 3x = 0

3. Collect the like times

4x - 3x = 0

x = 0

Hope this helps!

The snail moved 6 inches in 120 minutes. What was the average speed of the snail in inches per minute?

Answers

Answer:

0.05 in per min.

Step-by-step explanation:

We simply divide 6 by 120 to find our unit rate:

6 in/120 min = 1/20 = 0.05 in/1 min

Answer:

1/20 Inch per. Minute

Step-by-step explanation:

6/120 -->

6/1 x 1/120 --> cancel out 6 and 120 for 1 and 20 respectively

1/1 x 1/20 --> 1 x 1/20 => 1/20

Hope this helps!

(2x + 3)(5x2 - 2x - 1) = Ax3 + Bx2 + Cx + D. What are the values of B and C?

Answers

Answer:

B = 11; C = -8

Step-by-step explanation:

When simplified I get 10x^3 + 11x^2 - 8x - 3

Factor (x^2-1x)(-4x+4), with work shown

Answers

Answer:

4 ( -x^3 + 2x - x)

Step-by-step explanation:

refer the attachment

How many times greater is 700,000 than 70,000??

Answers

Answer:

10 times greater hun

Step-by-step explanation:

70000 times 10 equals 700000

Answer:

10 times greater.

Step-by-step explanation:

700,000 / 70,000 = 700 / 70 = 70 / 7 = 10 / 1 = 10

So, 700,000 is 10 times greater than 70,000.

Hope this helps!

To build a road, a company charges a flat fee plus a fee that varies depending on the number of kilometers of road built. The cost of the work is described by a graph that passes through points (0, 2) and (12, 7), in millions of reais, depending on the number of kilometers built. Therefore, determine the law that represents this function.

Answers

I dont remember that one sorry

Step-by-step explanation:

Answer:

y = 5/12 x + 2

Step-by-step explanation:

We need to find the equation of a line that passes through two given points.

y = mx + b

First, we find the slope.

m = slope = (y2 - y1)/(x2 - x1)

m = (7 - 2)/(12 - 0) = 5/12

Now we have

y = 5/12 x + b

To find the value of b, we use a point for x and y and solve for b.

y = (5/12)x + b

2 = (5/12)(0) + b

b = 2

The equation is

y = 5/12 x + 2

Natalie has 8 socks in a drawer.
5 of the socks are black.
3 of the socks are white.
Natalie takes out a sock at random, writes down its colour and puts it back into
the drawer.
Then Natalie takes out a second sock, at random, and writes down its colour.

Answers

Answer:

Probability that the two socks picked by Natalie are of the same colours = (17/32) = 0.53125

Step-by-step explanation:

Complete Question

Natalie has 8 socks in a drawer.

5 of the socks are black.

3 of the socks are white.

Natalie takes out a sock at random, writes down its colour and puts it back into

the drawer. Then Natalie takes out a second sock, at random, and writes down its colour.

Work out the probability that the two socks are of the same colour.​

Solution

This is a probability that involves replacement.

Probability of an event is given as the number of elements in the event divided by the total number of elements in the sample space.

If the event that a black socks is picked = P(B)

Then, the event that a white socks is picked = P(W)

P(B) = n(B) ÷ n(S)

n(B) = 5

n(S) = 8

P(B) = (5/8)

P(W) = n(W) ÷ n(S) = (3/8)

Probability that the two socks picked by Natalie are of the same colours = (Probability that the two socks picked are black) + (Probability that the two socks picked by Natalie are white)

Probability that the two socks picked are black = (5/8) × (5/8) (since the socks are picked and replaced, the probability stays the same)

= (25/64)

Probability that the two socks picked by Natalie are white = (3/8) × (3/8) = (9/64)

Probability that the two socks picked by Natalie are of the same colours

= (25/64) + (9/64)

= (34/64)

= (17/32) = 0.53125

Hope this Helps!!!

PLEASE HELP - Find the area of a regular octagon with a side length of 5 cm. Round to the nearest tenth. (Please explain in full detail the process, im trying to learn how to do these) thank you!!

Answers

Answer:

120.7

Step-by-step explanation:

The formula for finding the area of a regular octagon is: A = 2(1+[tex]\sqrt{2}[/tex])[tex]a^{2}[/tex].

Using the formula I got 120.7(rounded).

The area of the regular octagon with a side length of 5 cm is approximately 120.7cm².

We have,

To find the area of a regular octagon with a side length of 5 cm, you can use the following formula:

Area = 2 * (1 + √2) * (Side Length)²

Plugging in the values:

Area = 2 * (1 + √2) * (5 cm)² ≈ 120.7 cm²

Therefore,

The area of the regular octagon with a side length of 5 cm is approximately 120.7cm².

Learn more about octagons here:

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how to do this question plz ​

Answers

Answer:

adult = £7 and child = £2

Step-by-step explanation:

let a represent adult ticket and c child ticket, then

2a + 3c = 20 → (1)

a + 4c = 15 → (2)

Multiply (2) by - 2 and add to (1) to eliminate a

- 2a - 8c = - 30 → (3)

Add (1) and (3) term by term

- 5c = - 10 ( divide both sides by - 5 )

c = 2

Substitute c = 2 into either of the 2 equations and solve for a

Substituting into (1)

2a + 3(2) = 20

2a + 6 = 20 ( subtract 6 from both sides )

2a = 14 ( divide both sides by 2 )

a = 7

Cost of adult ticket is £7 and child ticket is £2

At the beginning of year 1, Josie invests $400 at an annual compound interest rate of 5%. She makes no deposits to or withdrawals from the account. Which explicit formula can be used to find the account's balance at the beginning of year 3?
A. A(3) = 400 • (1 + 0.05)3 – 1
B. A(3) = 400 + (3 – 1)(0.05 • 400)
C. A(3) = 400 + (0.05 • 400)3 – 1
D. A(3) = 400 • (1 + 0.05)3

Answers

Answer: A

Step-by-step explanation:

Since she invested $400 in the beginning if the 1st year and we are asked to find the balance at the beginning of the third year, she earns interest only for the first two years. So, the formula will be

Amount = 400 (1 + 0.05) ^3-1

To find the balance in Josie's account at the beginning of the the third year we have to use A(3)=[tex]400*(1+0.05)^{3-1}[/tex]

What is Compound interest?

It is the interest calculated on the initial principal amount and the accumulated interest. The formula to calculate the sum after compound interest is

Sum= [tex]P(1+r/m)^{tm}[/tex] where P=principal, r= rate of interest, m= number of times compounded in a year, t=time

How to calculate sum when interest is compounding?

At the beginning of year 1, Josie invests $400 at an annual compound interest at the rate of 5%,then the amount at the beginning of year 3 is calculated as:

The amount in beginning of 1 year=$400

The amount at the end of the year 1=400+400*0.05=400(1+0.05)

The amount at the end of year 2=400(1+0.05)+400(1+0.05)*0.05

=[tex]400(1+0.05)^{2}[/tex]

=[tex]400(1+0.05)^{3-1}[/tex]

Hence the option A is correct which is to be used to calculate the amount in Josie's account at the beginning of year 3.

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Pqrs is a rhombus. Find x, y and z. Justify your finding.

Answers

Answer:

x = 4, y = 2√21, z = 10

Step-by-step explanation:

Since all sides of a rhombus are congruent, z = SR = 10. Since the diagonals of a rhombus bisect each other, x = PO = 4. Using Pythagorean Theorem (look at ΔPSO, we know that PS = 10 and PO = 4), y = 2√21.

(06.01, 06.02 HC) I WILL MARK YOU BRAINIEST Part A: Create a fourth-degree polynomial in standard form. How do you know it is in standard form? (5 points) Part B: Explain the closure property as it relates to polynomials. Give an example. (5 points)

Answers

Part A:

A fourth-degree polynomial in standard form is :

To write a polynomial in a standard form you have to set its terms according to the variable powers in a descending order.

       In this example it would give:

      −6[tex]x^{4}[/tex]+3[tex]x^{2}[/tex]+4x +2

The degree of a polynomial is the maximum power of an unknown variable in the polynomial.

Part B:

The closure property as it relates to polynomials are :

Polynomials are closed for addition and subtraction. This is because the power does not change. Only the coefficients are changed.

This is illustrated by the examples below:

       (2x2 + 3x + 4) + (x2 - 5x - 3)

        3x2 - 2x + 1.

The above operation does not change  the degree. Only the number next to each variable changes.

Therefore, the addition and subtraction of polynomials is closed.

Know more about polynomials:

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Describe how the graph of y= x2 can be transformed to the graph of the given equation. y = x2 + 3 (5 points)

Answers

Answer:

x=-1 1/2,x=-1.5

Step-by-step explanation: x=-3/2

En una casa de empanadas hornean 1.200 por día. Si las cocinan en fuentes de 75 unidades, colocando siempre la mayor cantidad posible, ¿Cuántas fuentes preparan?

Answers

Answer:

16 unidades preparan simultáneamente 1200 empanadas por día.

Step-by-step explanation:

Si cada fuente tiene una capacidad de 75 empanadas por horneada y que la mayor cantidad posible ocurre cuando el volumen de producción se cocina simultáneamente, entonces el total de fuentes es la cantidad total de producción dividida por la capacidad de empanadas por fuente. Es decir:

[tex]x = \frac{1200\,emp}{75\,\frac{emp}{und} }[/tex]

[tex]x = 16\,unidades[/tex]

16 unidades preparan simultáneamente 1200 empanadas por día.

14 + 18 divided by 2 * 18
Is the answer 86 or no?

Answers

Answer:

No.

Step-by-step explanation:

Order of Operations using BPEMDAS:

14 + 18/2(18)

14 + 9(18)

14 + 162

176

true or false rise is the horizontale change between any two points on a line

Answers

Answer:

False

Step-by-step explanation:

rise is the vertical change between any two points on a line.

If 12^x = ^11√12, what value of x makes this equation true?

Answers

The root of a number is equivalent of being raised to its inverT

11 cubic root is = 1/11

X = 1/11

33°
87°
х
у
y = [ ? 10
Enter

Answers

Answer:

x= 60° y= 120°

Step-by-step explanation:

The sum of the sizes of a triangle's angles equals 180°

x+87+33= 180 x+120 = 180 x= 180-120x = 60°

y+x = 180 ⇒ y = 180-x = 180-60= 120

Answer:

y = 120

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the opposite interior angles

y = 33+87

y = 120

Purple paint requires an exact mixture of blue and red. The ratio of blue paint to red paint is 2:5. Marissa needs 35 cups of purple paint to paint a wall. How much of each color would be needed to make a total of 35 cups of perfect purple paint?

Answers

Answer:

achievements

Step-by-step explanation:

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Given that (0,0) is on the graph of f(x), find thecorresponding point for the functionf(x) 5. can some body help me plz Consider that 620(1.082)x models the average annual health care costs per person, in dollars, as a function of the number of years since 1950. Distinguish among packet filtering firewalls, stateful inspection firewalls, and proxy firewalls. A thorough answer will require at least a paragraph for each type of firewall.Acme Corporation wants to be sure employees surfing the web aren't victimized through drive-by downloads. Which type of firewall should Acme use? Explain why your answer is correct. How many multiples of 4, that are smaller than 1,000, do not contain any of the digits 6, 7, 8, 9 or 0? Plz help! -7(2k-3)=-35 fill in the empty spaces __ k +21=-35 __ k=__ k=__ ANSWERS -14 1 -56 21 7 -7 6 -14 4 24 -1 When 75.5 grams of phosphorus pentachloride react with an excess of water, as shown in the unbalanced chemical equation below, how many moles of hydrochloric acid will be produced? Please show all your work for the calculations for full credit. PCl5 + H2O --> H3PO4 + HC Write an expression involving integers for each statement a) moving 4 steps left, then moving 9 steps right b) on 3 separate occasions, Shari lost 2 pencils Help on this please all questions Question #38: Which sentence uses the past tense of to study correctly? A. Mark is studying for his math test with Margie. B. Mark will study for his math test with Margie. C. Mark studied for his math test with Margie. find the two consecutive odd integers such that 1/3 the smaller plus the larger equals 7 more than the sum of the two numbers www.g A bag contains 3 white counters, 10 black counters, and 4 green counters. What is the probability of drawing (a) a white counter or a green counter Suppose Azerbaijan decides to increase its production of nails by 20. What is the opportunity cost of this decision HURRY ASAP PLZZZZ ANYONE???? There are 25 towns in a certain country, and every pair of them is connected by a train route. How many train routes are there? By saying that the electrostatic field is conservative, we do not mean that:_______ The potential difference between any two points is zero. It is the gradient of scalar potential. Its circulation is identically zero along any path. Its curl is identically zero everywhere. The work done in moving a charge along closed path inside the field is zero. how to reword "for my art viewing i explored". its dumb but im stuck and i dont like the way it sounds. HURRY A positive kaon (K+) has a rest mass of 494 MeV/c , whereas a proton has a rest mass of 938 MeV/c. If a kaon has a total energy that is equal to the proton rest energy, the speed of the kaon is most nearly:___________. A. 0.25c B. 0.40cC. 0.55c D. 0.70c E. 0.85c Graph the equation y = 1/8x-7 Name the country that BEST fits the following emerging adult life paths: (1) often lives with parents until the early thirties; (2) lives independently with government help; (3) encourages independence but doesn't offer help with financing college and finding a career.A) (1) Greece; (2) Sweden; (3) United States B) (1) United States; (2) Sweden; (3) Greece C) (1) Sweden; (2) Greece; (3) United States D) (1) United States; (2) Greece; (3) Sweden The total value (debt plus equity) of Wilson Dover Inc. is $500 million and the face value of its 1-year coupon debt is $200 million. The volatility () of Wilson Dover's total value is 0.60, and the risk-free rate is 5%. Assume that N(d1) = 0.9720 and N(d2) = 0.9050. Refer to the data for Wilson Dover Inc. What is the value (in millions) of Wilson Dover's debt if its equity is viewed as an option?