Need help geometric sequences see pic for details

Need Help Geometric Sequences See Pic For Details

Answers

Answer 1

Given:

The recursive formula of a geometric sequence is

[tex]a_n=a_{n-1}\cdot (\dfrac{1}{8})[/tex]

[tex]a_1=-3[/tex]

To find:

The explicit formula of the given geometric sequence.

Solution:

We know that, first term of geometric sequence is [tex]a_1=-3[/tex].

Recursive formula of a geometric sequence is

[tex]a_n=a_{n-1}\times r[/tex]      ...(i)

where, r is common ratio.

We have,

[tex]a_n=a_{n-1}\cdot (\dfrac{1}{8})[/tex]    ...(ii)

On comparing (i) and (ii), we get

[tex]r=\dfrac{1}{8}[/tex]

The explicit formula of a geometric sequence is

[tex]a_n=a_1r^{n-1}[/tex]

Putting [tex]a_1=-3[/tex] and [tex]r=\dfrac{1}{8}[/tex], we get

[tex]a_n=-3\left(\dfrac{1}{8}\right)^{n-1}[/tex]

Therefore, the correct option is D.


Related Questions

NEED HELP ASAP!!!!Instructions: Using the following image, solve for the trigonometry ratios of

Answers

Answer:

17

8/17

Step-by-step explanation:

x=[tex]\sqrt{8^{2} +15^{2} } =17[/tex]

sin∠D = [tex]\frac{8}{17}[/tex]

5(g + 17) = (Simplify your answer.)​

Answers

Answer:

5g+85 is the answer

Step-by-step explanation:

i hoped it helped

5.401 \times 10^{-1} = {?}5.401×10 −1 =?

Answers

Answer:

2.005 x 10^2

Step-by-step explanation:

A meal that contains 4 grams of fat, 3 grams of protein, and 3 grams of carbohydrate will provide ______ calories.

Answers

60 calories

hope this helps :)

Total calories in  4 grams of fat, 3 grams of protein and 3 grams of carbohydrate is 56

What is the unitary method?

The unitary method is a method in which you find the value of a unit and then the value of a required number of units.

Given here: 4 grams of fat, 3 grams of protein and 3 grams of carbohydrate

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.

Thus total calories from given diet is = 4×4+4×3+9×3

                                                             =16+12+27

                                                            =56

Hence, Total calories in  4 grams of fat, 3 grams of protein and 3 grams of carbohydrate is 56

Learn more about the unitary method here:

https://brainly.com/question/22056199

#SPJ2

what is 7/9 of 1 1/14​

Answers

Answer:

1.5555556

1 5/9

14/9

Step-by-step explanation:

lucy trey and rubin have a total of $100 dollars in their wallets. trey has $5 more than lucy reuben has 3 times what. trey has how much do they have in their wallets

Answers

Lucy has $16. Trey has $21. Reuben has $63

What's the x that will make the fraction greater than or equal to 75%

Please show the thought process to get to x=16

1/5 = 20%

x-4/x >= 75% (x => 16. 12/16 = 75%)

Thanks,

Merry Christmas

Answers

9514 1404 393

Answer:

  x ≥ 16  or  x < 0

Step-by-step explanation:

You want ...

  (x -4)/x ≥ 3/4

  4(x -4) ≥ 3x . . . . . . multiply by 4x (requires x > 0)

  4x -16 ≥ 3x

  x ≥ 16 . . . . . . . . . . add 16-3x

__

For x < 0, multiplying by 4x gives ...

 4(x -4) ≤ 3x

  4x -16 ≤ 3x

  x ≤ 16 . . . . . and x < 0

__

There are two sets of solutions:

  x < 0  or  x ≥ 16

HELP PLS
analyze the diagram above and complete the instructions that follow.

Answers

Answer:

D

Step-by-step explanation:

answer is on the photo

A physicist examines 23 sedimentary samples for mercury concentration. The mean mercury concentration for the sample data is 0.036 cc/cubic meter with a standard deviation of 0.012. Determine the 80% confidence interval for the population mean mercury concentration. Assume the population is approximately normal. Step 1 of 2: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.

Answers

Answer:

The 80% confidence interval is  [tex]0.0328 <  \mu <  0.0392[/tex]

Step-by-step explanation:

From the question we are told that

  The sample size is  n = 23

  The sample mean is  [tex]\= x = 0.036 \ cc/m^3[/tex]

   The standard deviation is  [tex]\sigma = 0.012[/tex]

From the question we are told the confidence level is  80% , hence the level of significance is    

      [tex]\alpha = (100 - 80 ) \%[/tex]

=>   [tex]\alpha = 0.20[/tex]

Generally from the normal distribution table the critical value  of  [tex]\frac{\alpha }{2}[/tex] is  

   [tex]Z_{\frac{\alpha }{2} } =  1.282[/tex]

Generally the margin of error is mathematically represented as  

      [tex]E = 1.282  *  \frac{0.012 }{\sqrt{23} }[/tex]

=>    [tex]E = 0.00321 [/tex]

Generally 80% confidence interval is mathematically represented as  

      [tex]0.036  -0.00321 <  \mu <  0.036  + 0.00321[/tex]

=>  [tex]0.0328 <  \mu <  0.0392[/tex]

   

Can somebody help me pls

Answers

the answer can vary between x=−1 or x=2 or x=−3 or x=3

explanation:

x4−x3−11x2+9x+18=0

Step 1: Factor left side of equation.

(x+1)(x−2)(x+3)(x−3)=0

Step 2: Set factors equal to 0.

x+1=0 or x−2=0 or x+3=0 or x−3=0

x=−1 or x=2 or x=−3 or x=3

Given the linear function f(x) = 3x + b. If b is increased by 5, how would the line shift?

Answers

Answer:

the line would move up five units because b is the y intercept, and the y intercept determines the position of the line, not the look or slope of the line

Answer:

THE LINE WOULD MOVE UP 5 UNITS

Step-by-step explanation:

Select the correct answer.
Which graph represents this equation?
y- 4=-3(x+5)

Answers

Step-by-step explanation:

The given expression is :

y- 4=-3(x+5)

⇒ y-4 = -3x-15

⇒y+3x = -15 + 4

⇒ y+3x= -11

We need to draw the graph for this equation. The attached figure shows the graph for this equation.

which of the following are trinomials?
PLS, I REALLY NEED THIS ANSWER.

Answers

Answer:

Option (A) and Option (B)

Step-by-step explanation:

Trinomial is a polynomial having three terms.

Option A

[tex]\frac{5}{7}y^3+5y^2+y[/tex]

Number of terms = 3

So it's a trinomial.

Option (B)

x⁴ + x² + 1

Number of terms = 3

It's a trinomial.

Option C

6x² + 0.5y²

Number of terms = 2

It's a binomial.

Option D

x² + 3

Number of terms = 2

It's a binomial.

Option E

x¹¹

Number of terms = 1

Monomial

Option F

8x

Monomial.

Therefore, Option (A) and Option (B) are the correct options.

A recipe for 45 biscuits uses
5
2
cups of flour. How many biscuits are made from each cup of flour?

Answers

Answer:

18

Step-by-step explanation:

Please give brainliest!

Answer:

18

Step-by-step explanation:

Using partial quotients, which would be the best choice for the first number to subtract in the division problem 858 +26?

Answers

Answer:

780

Step-by-step explanation:

We want to use partial quotients in the division problem 858 ÷ 26.

In partial quotients method, what we do is to repeatedly subtract from the dividend easy multiples of the divisor.

In this case, the dividend is 858 and the divisor is 26.

Thus, the first easy multiple of the divisor we can use will be 30 because 30 × 26 = 780 yields the closest value to 858.

Therefore, the best choice for first number to subtract is 780

Answer: 780

Step-by-step explanation:

The best choice for the division problem will be 780.

every 5th visitor to an animal shelter gets a free animal calendar every 8th visitor gets a free animal toy witch visitor each day will be the first one to get both the calendar and the animal toy

Answers

Answer:

The 40th visitor will recieve both

Step-by-step explanation:

5×8= 40

8×5= 40

Arthemeatic sequence

Answers

Answer:

14

Step-by-step explanation:

its going down by 11

What is 60 minutes 20% of

Answers

Answer:

60 minutes is 20% of 300%

Step-by-step explanation:

60 minutes is 20% of 300

Which of the following are geometric sequences?
Check all that apply.

Answers

Answer:

c , I think :))))))))))))

Answer: C

Step by Step Explanation:

Can not give, sorry

Find the distance across the bridge

Answers

Answer:

32.5 ft

Step-by-step explanation:

Answer:160

Step-by-step explanation:

I think because it shows 160 feet all the way down as the 32 and 20 are only the height of the bridge

True or False. A triangle can be made with side lengths 4, 4 and 8.

Answers

Answer:

False

Step-by-step explanation:

please help me and my sister! Were a bit stuck!

Answers

Ok...

what exactly do you need help with?

Answer:

help with what lol

Step-by-step explanation:

Evaluate:5^-1 – 6^-1
with explanation please!!

Answers

Answer:

1/30

Step-by-step explanation:

5^-1 = 1/5

6^-1 = 1/6

1/5 - 1/6 = 1/30

Juanita earns $36 for 3 hours of work. At that rate, how long would she have to work to earn $720?

Answers

Well it would be 7 days. 36 x 3 is 108 720 divided by that is 6 but a remainder so you add one to 6 and it’s 7

Answer:

She has to work for 60hours in order to earn $720.

Step-by-step explanation:

Amount of money earned in 1hour=36÷3

                                                        =12$

Total time required=720÷12

                               =60hours

Please please help fast! I don't have time!!! Please

Answers

Answer:

Concept: Statistical Analysis

2 and 4 would be correct and indicate a strong correlation between the subject and the result

4. Which of the following represents a function?
(8,3), (8,3), (-8, -3), (-8, -3)
0 (-5, 6), (-5, 6), (-5, -6), (-5, -6)
O (3,9), (-7, 1), (6, 12), (-3, -9)
O (5, 1), (5,2), (5, 3), (5, 4)

Answers

The 3 option
(3,9), (-7,1), (6,12), (-3, -9)

what the answer?please tell me
12 points

Answers

Step-by-step explanation:

[7 + (-2)] * (-3)

= 7(-3) + (-2)(-3)

= -21 + 6

= -15. (C)

Answer:

C. -15

Step-by-step explanation:

Hope this helped have an amazing day!

Please helpppp me. Will give Brainlyist

Answers

SOH CAH TOA.
Sin = Opposite / Hypotenuse
Cos = Adjacent / Hypotenuse
Tan = Opposite / Adjacent

The regular price of a hooded jacket is $25.75. During a sale, the jacket was marked as 20% off. What was the approximate price of the jacket during the sale?
A.
$5.15
B.
$20.60
C.
$21.62
D.
$23.75

Answers

Answer:

5.15 hope this help!!!

Step-by-step explanation:

give this brainlieast so other people can know its not 20.60

Dan, Richard and Nick share £70 in a ratio 1:3:1. How much money does each person get?
Dan:
£

Richard:
£

Nick:
£

Answers

Answer:

dan 14 Richard 42 nick 14

Other Questions
Jaimi went to have a manicure that cost $30. She wanted to tip the technician 30% and the tax was 5.75%. How much did she spend total for the manicure n a true democracy, the mediamagazines, newspapers, and digital and television newsare tightly controlled by the government.Please select the best answer from the choices providedTF The force of attraction between objects that is due to their masses Describe the purpose and user requirements for the website. According to the passage, the main difference between men's and women's communication in the past was how mucheach gender communicated.Please select the best answer from the choices providedtruefalse What will you see on the next line?>>> aList = [12, 3, 5, 7, 7]>>> aList.index(7)1732 Who was leading and guiding the disciples after the day of Pentecost? Peter Paul the Holy Spirit Which battle gave Santa Anna his reputation for being merciless HELPPPP PLEASE ASAPPPP Find the slope of the line through each pair of points (-5, -3), (19, 19) 1. How many moles of Mg are there in 9.20 x 1024 atoms of Mg? Imagine that you live in a city that gets a lot of wind. Youare part of a group that is examining the environmentalimpact of switching your region from fossil fuels to windpower.Which two events are possible consequences that you should consider?A. Risk to birds that live in your areaB. Decrease in carbon dioxide productionO C. Harm to animals living in the region's riversD. Toxic waste created by nuclear reactions Which of the following are cultural universals?fairy talesagnostic philosophyfamilylanguageethicspolytheismchild marriagefeastinggreetingslaw PLEASE HELP, WILL GIVE BRAINLIEST!! I a need a 2 paragraph essay. The paragraphs only have to be about 5 sentences long. I thank you so much if you take some of your time to do this. This is a MAJOR part of my grade and i cant fail ELA. TYSM if you do this! You dont know how much i will appriciate this!! :) on a survey seven students reported how many minutes it takes them to travel to school . here are their responses 5, 12 , 4 , 8 , 7 ,10 , 12 . find the mean travel time for these students if necessary round your answer to the nearest tenth i need help with this practice problem Please help quick! I will select brainliest. Select the correct text in the passage.Which two parts of this excerpt from John Bunyan's The Pilgrims Progress show that the central character is devoutly religious and God-fearing?Then said Evangelist, Why not willing to die, since this life is attended with so many evils? The man answered, Because I fear that this burden is upon my back will sink me lower than the grave, and I shall fall into Tophet [Isa. 30:33] And, Sir, if I be not fit to go to prison, I am not fit, I am sure, to go to judgement, and from thence to execution; and the thoughts of these things make me cryThen said Evangelist, If this be thy condition, why standest thou still? He answered, Because I know not whither to go. Then he gave him a parchment roll, and there was written within, Flee from the wrath to come. [Matt. 3.7]The man therefore read it, and looking upon Evangelist very carefully, said, Whither must I fly? Then said Evangelist, pointing with his finger over a very wide field, Do you see yonder wicket-gate? [Matt. 7:13,14] The man said, No. Then said the other, Do you see yonder shining light? [Ps. 119:105; 2 Pet. 1:19] He said, I think I do. Then said Evangelist, Keep that light in your eye, and go up directly thereto: so shalt thou see the gate; at which, when thou knockest, it shall be told thee what thou shalt do. Which of the following values is equivalent to the pound used by the U.S. customary system?545.16 grams453.592 grams254.592 grams645.16 grams orange juice being made from fresh oranges O a. physical property Ob. physical change O c. chemical property O d. chemical change If it takes 42 strokes to fill up 3/5 of a line of typing, how many more strokes will it take to complete the line?