Wednesday

April 23, 2014

April 23, 2014

Number of results: 1,141

**algebra**

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 4, 8, –16, 32, . . . A.arithmetic, 64, 128, 256 B.geometric, –64, 128, –256 C.geometric, –48, 64, –80 .DThe sequence is neither geometric nor arithmetic. I think it's B...? 81, 27, 9, 3...
*Tuesday, March 19, 2013 at 10:41am by Cassie*

**Math**

Which represents the type of sequence: 12, 22, 30, 36, 41, …? neither arithmetic nor geometric both arithmetic and geometric arithmetic geometric
*Saturday, March 10, 2012 at 1:11am by Brett *

**calculus**

It is not clear without sufficient parentheses what the expression really is. I assume it to be: Sum((-1)^n * (3/3^n)) for n=0 -> ∞ This is an alternating geometric series. (9/2) is the correct sum for the geometric series (non-alternating). Write out the first few ...
*Tuesday, September 7, 2010 at 8:10pm by MathMate*

**Geometric Series (Algebra 2)**

I need some assistance or a formula when trying to find the first term of geometric series please! I don't understand this!!!! What is the first term of a geometric series with a summation of 289, 5 terms and a common ratio of 1/2?
*Saturday, April 14, 2012 at 1:09pm by Greg*

**Math (Geometric Progression)**

5 distinct positive reals form an arithmetic progression. The 1st, 2nd and 5th term form a geometric progression. If the product of these 5 numbers is 124 4/9, what is the product of the 3 terms of the geometric progression? Note: The phrase "form an arithmetic progression" ...
*Saturday, June 22, 2013 at 3:08am by Shin*

**geometric series**

what is the nth term equation for a geometric sequence with a1 = 36 and r = 1/3
*Monday, September 13, 2010 at 10:42pm by raven*

**MONGU COLLEGE**

series is geometric, r=1/2 4,2,1,1/2,1/4,1/8 .... use geometric sum formula, a0=4, r=1/2
*Tuesday, February 26, 2013 at 6:38pm by bobpursley*

**Mathematics. Geometric sequences.**

2+4+8+...is a geometric sequence. Prove the sum of the first n terms is two less than the (n+1)the term.
*Sunday, March 10, 2013 at 1:46pm by Olivia*

**Algebra**

Identify the sequence as arithmetic, geometric, or neither. Explain your answer. 1.6, 0.8, 0.4, 0.2, . . . I think it is geometric - divisible by 1/2...? Is that right?
*Thursday, March 21, 2013 at 11:44am by cassie*

**8th grade math!!!!! :)**

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 1. 14, 19, 24, 29, . . . (1 point) geometric, 34, 39, 44 arithmetic, 32, 36, 41 arithmetic, 34, 39, 44 The sequence is neither geometric nor arithmetic. 2. –4, 8, –16, 32, . . . (1 point) ...
*Thursday, April 11, 2013 at 4:46pm by jessie*

**Maths**

Eric thinks of 2 sequences.One is geometric and the other arithmetic.Both sequences start with the number 3.The common ratio of the geometric sequence is the same as the common difference of the arithmetic sequence.If the 6-th term of the geometric sequence is 96.Find the ...
*Sunday, February 3, 2013 at 4:27pm by Lucas*

**geometric mean**

what is the meaning of geometric sequence?
*Monday, May 7, 2007 at 8:25pm by destiny*

**Geometric progression**

The second term of a geometric progression is 12 more than the first term given that the common the ratio is half of the first term. Find the third term of the Geometric progression
*Sunday, October 23, 2011 at 1:06pm by Anonymous*

**math**

-4, 8, -16, 32 arithmetic 64, 128, 256 geometric -64, 128, -256 Geometric -48, 64, -80 the sequence is neither geometric nor arithmetic
*Thursday, May 9, 2013 at 6:26pm by Nisabel*

**Please help--Geometric series**

your title says, "geometric series" none of them are a geometric series 1) I think you have a typo and meant 5/1 + 8/1 + 11/1 + 14/1 + . . first of all the 1's in the denominator are redundant and you are simply looking at 5 + 8 + 11 + 14 + ... which is (3n+2) with n starting ...
*Sunday, March 29, 2009 at 5:17pm by Reiny*

**math**

each of the points on the two graphs are of the form (n, tn), where tn is either a geometric or arithmetic sequence. identify the graph that presents a geometric sequence. justify your answers. then determine S8 of the geometric sequence graph A points: 1,5 2,3 3,1 4,(-1) 5,(-...
*Tuesday, January 18, 2011 at 2:36pm by nicole*

**7th Grade Math for Steve.. or Ms. Sue**

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 1. 14, 19, 24, 29, . . . (1 point) geometric, 34, 39, 44 arithmetic, 32, 36, 41 arithmetic, 34, 39, 44 ** The sequence is neither geometric nor arithmetic. 2. –4, 8, –16, 32, . . . (1 point...
*Sunday, April 28, 2013 at 4:20pm by Gabby*

**Geometric Proofs**

how to place information to get answer of geometric mean of 25.4, 9, 16, 4.25, 8.11, 19?
*Tuesday, December 13, 2011 at 9:28pm by catherine*

**math**

Google "geometric series" or "sum of geometric series" here r = 2 and your first value a = 2 and you do it 12 times
*Friday, January 3, 2014 at 11:09am by Damon*

**math30**

r = .5 Just as in your other problem, r in a geometric sequence is the ratio of every term to the one before it. That is the very meaning of a geometric sequence.
*Thursday, August 23, 2012 at 5:34pm by Damon*

**Geometric Sequence**

The product of the first five terms of a geometric progression is 32. If the fourth term is 17, compute the second term.
*Tuesday, March 12, 2013 at 7:37am by Will*

**Calculus III**

1. Apparently you mean the sum from n=1 to n=infinity of 1/(6n^2) = 1/(6*1) + 1/(6*4) + 1/6*9) = (1/6)(1 + 1/4 + 1/9 + 1/16 + ...)] This is not a geometric series. The ratio of successive terms is not a constant. 2. 0.6 + 0.6^2 + 0.6^3 + ... = 0.6(1 + 0.6 + 0.6^2 + ...] = 0.6...
*Monday, December 10, 2007 at 11:06pm by drwls*

**Pre-Calculus-check answers**

1) I agree 2) Your answer is OK, but these are not geometric means. They are three numbers in a geometric progression. Another possible answer would be -2, -2 sqrt2, -4.
*Saturday, September 13, 2008 at 4:12pm by drwls*

**Geometry-8th gr**

The geometric mean x of two numbers is the positive value of x that satisfies the proportion a/x =x/b, where a and b are given. Find the geometric mean of 16 and 9.
*Thursday, January 31, 2013 at 6:48pm by Mona*

**geomtry**

Which statement best compares the two pictures? Picture 1 is a drawing because it uses some geometric measuring tools and Picture 2 is a sketch because it is made freehand with just a pencil. Picture 1 is a construction because it uses some geometric measuring tools and ...
*Friday, September 30, 2011 at 4:10pm by gummy*

**Math**

5 distinct positive reals form an arithmetic progression. The 1st, 2nd and 5th term form a geometric progression. If the product of these 5 numbers is 124 4/9, what is the product of the 3 terms of the geometric progression? Note: The phase "form an arithmetic progression" ...
*Saturday, May 11, 2013 at 3:56am by Shin*

**Chemistry**

1)Define the term'geometric isomers' 2)Give geometric isomers and corresponding names for the following condensed structural formula: CH3CH2(CH)2CH3
*Friday, September 23, 2011 at 2:55am by Gift*

**math**

The 65th therm in a geometric sequence is 8000, and the 69th term is 500, find the 64th term using the geometric series sum formula
*Sunday, December 18, 2011 at 7:30pm by Poppy*

**algebra**

is (1/2) - (3/2) = (1/6)-(1/2) if yes, then arithmetic, but it isn't. is (1/2) ÷ (3/2) = (1/6)÷(1/2) if yes, then geometric 1/2 ÷ 3/2 = 1/3 (1/6)÷(1/2) = 1/3 but (1/8) ÷ (1/6) = .75 (no good) so the sequence is neither arithmetic nor geometric.
*Sunday, April 19, 2009 at 11:37pm by Reiny*

**CALC II**

Determine the convergence of the following series using the nth-partial sum or geometric series formula. The sum of n=1 to inifitiy 1/(9n^2+3n-2) How do I start? I'm guessing I should factor out the denominator but whats after that? It is close to a geometric series, so use ...
*Monday, June 18, 2007 at 4:16pm by Ace*

**Algebra II (Geometric Series)**

What is the sum of the following geometric series: 1+1/4+1/16
*Tuesday, June 5, 2012 at 7:32pm by Gregory*

**Math Geometric Series**

Evaluate this geometric series: 7 + 14 + 28 + ... + 3584
*Monday, June 3, 2013 at 7:21pm by Anonymous*

**algebra**

If for your given terms, the first term is -4 then it would be geometric. Probably just a typo, if so then r = -2 , and your choice of B would be correct for the second, it is geometric , and yes, they are dividing by 3, so r = 1/3 let's keep going 81 27 9 3 1 1/3 1/9 so it is C
*Tuesday, March 19, 2013 at 10:41am by Reiny*

**math**

1) If the number 1,1/3,1/9, are terms of Geometric progression. Find its common ratio 2) If the second term of Geometric progression is equal to 3, and the 5th term is equal to 81/8. Find the 7th term. 3)If x,y,3 is a Geometric progression. Find the value of x and y 4) Insert ...
*Saturday, March 12, 2011 at 1:52pm by bogoss *

**check one question statistic**

For the scenario below, determine if the experiment describes a geometric distribution. If it is not a geometric setting, state why. if it is a geometric a) the two outcomes head or not head b) What constitutes one trial Flip a coin constitutes a flip coin c) the probability ...
*Monday, March 31, 2014 at 1:26pm by helen*

**arithmetic**

use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 50 and the 8th term is 18
*Thursday, March 17, 2011 at 12:35pm by Taylor White*

**AGL 2 (Geometric Series)**

Is their a formula for finding the Sum for Geometric Series?
*Wednesday, February 1, 2012 at 8:10pm by Embraced*

**Maths - Geometric Progression**

Find the value of x for which the numbers x+1, x+3, x+7, are in geometric progression.
*Thursday, October 4, 2012 at 1:36am by Anonymous*

**Math - Geometric Series**

Find the sum of the geometric series 128 - 64 + 32 - . . . to 8 terms. a) 85 b) 225 c) 86 d) 85/2 e) not possible
*Saturday, December 11, 2010 at 10:24am by Robo123*

**precalc**

Determine whether the sequence is geometric or arithmetic. Then give the general formula for the nth term of the sequence. 6.1, 6.9, 7.7, 8.5, 9.3,... I think it is Geometric, but i don't know how to find the formula
*Monday, December 5, 2011 at 11:54am by Alex*

**precalc**

If it's geometric, the ratio of successive terms does not change: 6.9/6.1 = 1.131 7.7/6.9 = 1.116 ... not geometric If it's arithmetic, the difference between terms does not change: 6.9-6.1 = .8 7.7-6.9 = .8 8.5-7.7 = .8 9.3-8.5 = .8 looks like an A.S. to me.
*Monday, December 5, 2011 at 11:54am by Steve*

**chem**

Draw the three distinct geometric isomers of 2,4-hexadiene. i can draw what it is giving. but i do not get what the geometric isomers are? if you drew it a different way wouldnt that change the name?
*Saturday, September 15, 2012 at 4:46pm by sara*

**Algebra 2 - Geometric Series**

I need help evaluating the geometric infinite series. It's got the double zero thing over the E thing. 00 E(-1/2)^ n-1 (n=1)
*Wednesday, April 29, 2009 at 1:00pm by Kay*

**Algebra**

The first element of a geometric sequence is 1 and the common ratio is 3; determine the smallest 4 digit numeral that represents an element of this geometric sequence
*Sunday, December 16, 2012 at 4:52am by xavier*

**DDP**

what are the different types of geometric constraint that are appiled to sketches and what are their functions? answer: is it geometric constraint numerical constraint assembly constraint
*Thursday, January 15, 2009 at 7:41pm by Anonymous*

**Geometric Sequence **

Find the fourth term (a4) of geometric sequence if the first term (a1) is 2 and the common ratio, r is 4.
*Saturday, January 14, 2012 at 5:17pm by Embraced*

**Algebra 2**

Determine if the sequence is arithmetic, geometric, or neither. If it is arithmetic or geometric, write a rule. 4,1,0,1,4 My answer: Neither (-2)^2 (-1)^2 0^2 1^2 2^2 Is it correct?
*Friday, October 26, 2012 at 4:13pm by Anonymous*

**Maths**

1..The first 2 terms of a geometric progression are the same as the first two terms of an arithmetic progression.The first term is 12 and is greater than the second term.The sum of the first 3 terms od the arithmetic progression is 4/3 less than the sum of the first 3 terms of...
*Sunday, February 3, 2013 at 4:35pm by Lucas*

**Pre Calc**

Well, a geometric sequence is of the form; a, ar, a(r^2), a(r^3), ... , a(r^n) where t(0) = a, t(1) = ar etc. [the sequence 1, 1/2, 1/4, 1/8, 1/16,... is geometric with a = 1 and r = 1/2] Ok, hope that helps!
*Sunday, March 15, 2009 at 8:58pm by GanonTEK*

**Pre-Calculus-check answers**

Find the sixth term in the geometric sequence: sqrt3y^3, -3y^5, 3sqrt3y^7 Answer: -27y^13 2) Find three geometric means between -sqrt2 and -4sqrt2. Answer: -2, 2sqrt2, -4 Thanks
*Saturday, September 13, 2008 at 4:12pm by Lucy*

**geometric mean**

Eighteen is the Geometric Mean of 12 and what number 18 = sqrt (12 x) Solve for x. The answer is an integer, and it isn't 24 (That's the arithmetic mean). cheese is yellow
*Monday, May 7, 2007 at 8:25pm by mike*

**Math**

first three terms of a geometric sequence are the same as the 1st, 9th and 11th terms of an arithmetic sequence, respectively. What is the common ratio in the geometric sequence ? Thanks!
*Saturday, May 12, 2012 at 9:41pm by Matthew*

**Geometric Progression**

Integers a, b, c, d and e satisfy 50<a<b<c<d<e<500, and a,b,c,d,e form a geometric sequence. What is the sum of all possible distinct values of a?
*Wednesday, June 19, 2013 at 1:38am by Mathslover*

**math30**

The sum of the first 10 terms of the geometric sequence -4, 6, -9,..., to the nearest tenth, is; The answer is: For the geometric series a=-4, r=-1.5 or -3/2, n=10. Sn= a(r^n - 1)/r - 1 S10= -4((-1.5)^10 - 1)/-1.5 - 1 S10= 90.7 My question is from where they got r=-1.5 or -3/2...
*Thursday, August 23, 2012 at 5:41pm by alejandro*

**math**

Duplicate post; already answered. Your question is incorrectly stated. There is only one geometric mean between two numbers. In my other answer to this question, I tried to figure out what you really want to know: three intermediate numbers of a geometric series.
*Monday, January 10, 2011 at 5:43am by drwls*

**math**

1)Find the sum of the first eight terms of the Geometric progression 256,128,64,32 2)How many terms should be taken from the Geometric progression 4,12,36 for the sum to be 2188
*Saturday, March 19, 2011 at 2:18pm by la bellgoss*

**Geometry-8th gr**

NOOO, the geometric mean is 12 I merely showed that 12 is correct and satisfied your given proportion a/x = x/b the 3 numbers are: 16 , 12 , 9 , with 12 as the geometric mean
*Thursday, January 31, 2013 at 6:48pm by Reiny*

**math help please ASAP**

2. Identify the sequence as arithmetic, geometric, or neither. 1.6, 0.8, 0.4, 0.2, . . . (1 point) arithmetic geometric neither 3. 5 • 3^n (1 point) 15, 30, 45, 60 5, 15, 45, 135 0, 15, 45, 135 15, 45, 135, 405 4. Use the function rule ƒ(x) = n • |–1|^n. Find the output ƒ(2...
*Thursday, April 25, 2013 at 7:52pm by Delilah*

**Maths**

Consider all 3-term geometric sequences with first term 1 and with common ratio the square of an integer between 1 and 1000. How many of these 1000 geometric sequences have the property that the sum of the 3 terms is prime?
*Monday, April 29, 2013 at 4:13am by ianian*

**algebra**

Consider all 3-term geometric sequences with first term 1 and with common ratio the square of an integer between 1 and 1000. How many of these 1000 geometric sequences have the property that the sum of the 3 terms is prime?
*Monday, April 29, 2013 at 11:27am by deli*

**geometric mean**

The geometric mean of two postitive numbers a and b is sqrt(ab). Show that for f(x) = 1/x on any interval [a,b] of positive numbers, the value of c in the conclusion of the mean value theorem is c = sqrt(ab) I have no idea how to do this! If the mean of a and b is sqrt(ab), ...
*Sunday, November 5, 2006 at 8:58pm by Jen*

**pre algebra**

solve whether the sequence is arithmetic or geometric if it is arithmetic or geometric,state the common difference or common ratio and write the next three terms of the sequence 10,18,26,34
*Thursday, May 3, 2012 at 5:31pm by keith*

**Math**

Consider all 3-term geometric sequences with first term 1 and with common ratio the square of an integer between 1 and 1000 (inclusive). How many of these 1000 geometric sequences have the property that the sum of the 3 terms is prime?
*Wednesday, May 1, 2013 at 11:21pm by Maths lover Please Help...*

**paper**

I have to write a paper on vases from Geometric to Orientalizing periods.(from ancient Greece). So these are my Thesis Statements: "My paper is about the representations of animals and humans form on the vases from the Geometric to Orieltalizing periods." or "My paper is about...
*Friday, November 20, 2009 at 7:31pm by Jasmine/to Ms. Sue*

**Math - Geometric Vectors**

Find the length and the direction of the resultant of each of the following systems of forces: a) forces of 3 N and 8 N acting at an angle of 60° to each other I'm completely lost. I don't know how to solve this question using geometric vectors. Please walk me through the ...
*Sunday, February 17, 2008 at 2:40pm by Anonymous*

**AP Calculus**

yes, you realized that the series was geometric rather than arithmetic so you have a=-1, r = -11, n = 9 you now need the formula for the sum of a geometric, not arithmetic like you stated. sum(n) = a(r^n - 1)/(r-1) = -1( (-11)^9 - 1)/(-11-1) = -196495641
*Tuesday, July 10, 2012 at 9:58pm by Reiny*

**Chemistry**

What type(s) of isomerism is/are exhibited by potassium dioxalatodiaquachromate(III) dihydrate? (A) Geometric isomerism (B) Optical isomerism (C) Both geometric and optical isomerism (D) No isomerism (E) It is difficult to determine isomerism since it is fluxional
*Sunday, January 30, 2011 at 12:55am by John*

**Chemistry**

What type(s) of isomerism is/are exhibited by potassium dioxalatodiaquachromate(III) dihydrate? (A) Geometric isomerism (B) Optical isomerism (C) Both geometric and optical isomerism (D) No isomerism (E) It is difficult to determine isomerism since it is fluxional
*Sunday, January 30, 2011 at 1:42pm by John*

**Calc**

We are working on finding the intervals of convergence of power series in class. Why do we not have to test for the convergence of the endpoints for geometric series? They always seem to diverge. Is this a set rule when working with the geometric series for this type of problem?
*Thursday, December 1, 2011 at 8:10pm by Chloe*

**Series (Pre-Cal)**

Let me ask you the same question: If the distance to a wall is 1 meter, and in each step you go 1/9 th the way remaining. If you do this an infinite number of times, how far will you have traveled? 1/9+ 8/9 * 1/9 + 1/9*(8/9)^2+ ... 1/9(1+ (8/9)^2 + (8/9)^3 + ..) or 1/9 the sum...
*Saturday, March 21, 2009 at 9:08pm by bobpursley*

**algebra**

1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1 answer=d 3)Find four ...
*Thursday, August 23, 2007 at 11:36pm by Marissa*

**algebra**

1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1 answer=d 3)Find four ...
*Friday, August 24, 2007 at 5:51pm by Marissa*

**algebra**

1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1 answer=d 3)Find four ...
*Sunday, August 26, 2007 at 2:01am by Marissa*

**algebra(check)**

1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1 answer=d 3)Find four ...
*Friday, August 24, 2007 at 10:39am by Marissa*

** Math**

What are different kinds of congruents? There are hundreds of types of congruence. You would need to be more specific. Some examples: - modular - linear - geometric - group theory - ring theory How about the different kinds of congruents in geometric?
*Tuesday, April 17, 2007 at 6:38pm by Sean*

**MATH**

Anything multiplied by zero is zero. If the first term in a geometric sequence is 0 that is only term in a geometric sequence.
*Thursday, March 31, 2011 at 12:14am by Anonymous*

**math**

1)Find the sixth term of the geometric sequence for which a1=5 and r=3 A)1215 B)3645 C)9375 D)23 I chose A 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3... A)aN=-12(1/3)n-1 B)aN=12(-1/3)n-1 C)aN=-12(-1/3)-n+1 D)aN=-12(-1/3)n-1 I chose C 3)Find four ...
*Wednesday, December 12, 2007 at 11:15am by Jon*

**sum geometric series**

what is the sum of geometric infinite series 3/2+ 9/16+ 27/128+ 81/1024=.... i know the formula is S=a/(1-r) my teacher, he usually transforms into a formula of the sum series and finds out a and r.but i don't how to do that. the pattern i saw is 3/2 + 3^2/2^4 + 3^3/2^7+ 3^4/2...
*Monday, April 9, 2007 at 5:20pm by david*

**algebra**

can you check my answers please? What are the first three terms of the sequence: a1 = 3 and an = 2(an1)2? 2, 8, 18 3, 18, 648 --3, 32, 50 2, 6, 12, 24 What is the 14th term in the sequence: an = 4n + 13? -43 43 __> -69 69 What is the recursive rule for the sequence: −...
*Thursday, March 22, 2012 at 1:45am by Jennifer*

**Algebra**

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 14, 19, 24, 29, . . . A.geometric, 34, 39, 44 B.arithmetic, 32, 36, 41 C.arithmetic, 34, 39, 44 D.The sequence is neither geometric nor arithmetic. I think this is C...? What are the first ...
*Tuesday, March 19, 2013 at 10:48am by Cassie*

**Math: Calculus - Geometric Vectors**

Find the magnitude and the direction of the resultant of each of the following systems of forces using geometric vectors. a) Forces of 3 N and 8 N acting at an angle of 60 degrees to each other. Please help me with this question. I don't understand the wording, so I don't know...
*Sunday, February 17, 2008 at 11:41pm by Anonymous*

**math**

suppose an arithmetic sequence and a geometric sequence with common ration r have the same first two terms. show that the third term of the geometric series is r^2/(2r-1) tomes the third term of the arithmetic sequence
*Tuesday, February 17, 2009 at 9:41pm by isa*

**Sequences**

Find the rule for number 2, which is a geometric series. You can tell if it is a geometric series by dividing any term by the previous. If the quotient is the same, then it is a geometric series. The rule for a geometric sequence is: t(n)=ar^n and r is the quotient by dividing...
*Saturday, May 25, 2013 at 10:42am by MathMate*

**Alg 2/trig**

I am doing Geometric sequences, but I cannot figure out how to find the Nth term of a geometric sequence. The problem is A1 = 64, Ak+1 = 1/2Ak (That is supposed to be A sub one, A sub k + 1, etc.) The formula for finding the equation is: An = A1 x R^n-1 The answer is: An = 128...
*Wednesday, March 11, 2009 at 9:34pm by Christopher*

**Math**

after one hour, 3 after two hours, 9+3 after three hours, 27+9+3 so this is a geometric series, 3,9,27, ...3^t The sum of a geometric series is St=(1-3^t)/(1-3)=(1-3^t)/-2 or 8500*(-2)=1-3^t -17000=-3^t log17000=tlog3 t=8.86, but t is an integer, so t=9 hours. check my work.
*Monday, March 19, 2012 at 5:07pm by bobpursley*

**7th grade art Ms. Sue please**

1. This term refers to a subject in artwork that has been simplified and rearranged. (1 point) nonobjective linear semi-abstract objective 2. This term refers to artwork that does not have a reference to a subject or object. (1 point) representational nonobjective subjective ...
*Tuesday, November 27, 2012 at 8:06pm by Delilah*

**Calculus**

1 + .865 + .865^2 +.865^3 ...... this is a geometric series with the first term one and every successive term multiplied by r =.865 (approx) If r <1 then the geometric series converges. for the series a + a r + a r^2 + a r^3 ----- a r^oo the sum is S = a/(1-r) here a = 1 ...
*Monday, March 4, 2013 at 3:47pm by Damon*

**algebra**

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...
*Thursday, August 23, 2007 at 11:54pm by Marissa*

**algebra**

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...
*Friday, August 24, 2007 at 5:51pm by Marissa*

**algebra**

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...
*Sunday, August 26, 2007 at 2:02am by Marissa*

**algebra(check)**

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...
*Friday, August 24, 2007 at 10:40am by Marissa*

**geometric mean**

need the geometric mean for 4 and 6
*Sunday, November 5, 2006 at 8:58pm by keisha*

**Can someone help me?!**

The 1st, 5th and 13th terms of an arithmetic sequence are the first three terms of a geometric sequence with a common ratio 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence.
*Thursday, January 3, 2013 at 6:06pm by Jm*

**geometry**

What geometric postulate justifies statement: if AB is congruent to CD and CD is congruent to EF, then AB is congruent to EF. Two geometric objects that are congruent to the same third object are congruent to each other.
*Thursday, December 7, 2006 at 1:53am by Nicole*

**math**

What is the difference between geometric mean and arithmetic mean? Arithmetic mean of two numbers A and B is: (A + B)/2 Geometric mean of two numbers A and B is: sqrt(A*B) The geometric mean can be rewritten as follows: sqrt(A*B) = Exp{Log[sqrt(A*B)]} = Exp{1/2 [Log(A) + Log(B...
*Tuesday, July 17, 2007 at 3:40pm by Mary*

**Geometric series**

The sum of the first five terms of a geometric series is 186 and the sum of the first six terms is 378. if the fourth term is 48, determine a(first term),r(ratio), t10, S10.
*Sunday, January 6, 2013 at 9:28pm by PJ*

**GEOMETRY**

If you have n numbers, the geometric mean is the nth root of the product of these numbers e.g. for the numbers 4,6,7,9,22 the geometric mean is the 5th root of (4*6*7*9*22) = 8.024
*Monday, November 17, 2008 at 7:18pm by Reiny*

**math...**

how can I tell if a sequences is airthmetic, geometric or neither? determine the first three terms of each and determine if each are airthmetic, geometric or neither. 1) tn=5t n-1+ 3 wheret 1=2 first three terms: 3,13,23 airthmetic 2)t(n)= -3(4)^n first three terms:-12,-48,-...
*Wednesday, October 18, 2006 at 6:55pm by GEORGE!*

**math **

Is there a common ratio for the geometric sequence and what are the missing terms? 16,40,100,?,? IS there a common ratio for the geometric sequence and what are the missing terms? 81,54,?,?,?
*Thursday, March 31, 2011 at 8:12am by SHERYL*

**geometry**

Dorothy,Multiply 6x9x15 = 4,860.00 I have been a teacher for 17th grade for 97years and I know that's correct! Have a good time in math, I was 2 years old when I invented the geometry science and I love it so much , I'm immortal so I get to see all the kids like you Dor that ...
*Thursday, December 8, 2011 at 1:39pm by Ms.Fidelus*

Pages: **1**