Wednesday

July 23, 2014

July 23, 2014

Number of results: 69,405

**Word Problem - Check Answer (geometric Seq)**

1) Suppose five people are ill during the first week of an epidemic and that each person who is ill spreads the disease to four people by the end of the next week. By the end of the tenth week of the epidemic, how many people have been effected by the illness? A - 1477625 b - ...
*December 11, 2010 by Robo123*

**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 ...
*August 24, 2007 by Marissa*

**math-ms sue please**

Ms Sue thank you for the help with my other word problem can you check this one for me? Write a word problem and find the solution to the equation. 1/2-2/3 THe answer is -1/6 and the word problem I created is: Janet put 6 suckers on a table. 3 suckers were watermelon and 3 ...
*October 27, 2010 by m*

**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
*September 13, 2008 by Lucy*

**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 ...
*August 24, 2007 by Marissa*

**Geometric series - Check my answer**

What is the first term in a geometric series with ten terms, a common ratio of 0.5 and a sum of 511.5? I got 256 as my answer. 511.5=a1[1-(.5)^10]/1-1/2 511.5=a1(1023/1024)/1/2 511.5=a1(1023/512) ----> divide by both sides 256=a1
*December 11, 2010 by Robo123*

**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 ...
*August 23, 2007 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 ...
*August 24, 2007 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 ...
*August 26, 2007 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 ...
*August 23, 2007 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 ...
*August 24, 2007 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 ...
*August 26, 2007 by Marissa*

**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...
*March 11, 2009 by Christopher*

**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...
*April 28, 2013 by Gabby*

**Math**

Is the following sequence a arithmetic,geometric or neither? 1.6, .8, .4, .2 my answer is geometric
*May 11, 2014 by steve*

**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: −...
*March 22, 2012 by Jennifer*

**Algebra help PLEASE? **

14, 8, -16, 32... Arithmatic. 64, 128, 256 geometric, -64, 128, -256 geometric, -48, 64, -80*** the sequence is neither geometric nor arithmatic 81, 27, 9, 3.. aruthmatic , 0,-3,-6 geometric, 0,-3,-6 geometric, 1, 1/3, 1/9
*April 21, 2014 by Aniston*

**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?
*March 21, 2013 by cassie*

**math**

i need help in how to check my answer for an equation problem. The problem is -n over 2 equals to 18 i already know what -n is [-36[ but now how do i check it
*January 16, 2013 by seher*

**algebra**

Could you please check my answer to this problem: Simplify the expression Original problem: (3x^2+10x-8)/(3x^2-17x+10) x (2x^2 + 9x -5)/(x^2 + 3x-4) The answer I got was: (3x +4)(x-2)/ (3x-2)(x-5) x (2x-1) ( x +5)/ (x +4) (x-1) so basically the problem could not be simplified...
*June 1, 2008 by Jennifer*

**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...
*March 19, 2013 by Cassie*

**calculus**

f(x) = 6x^2 -8x +3 how would I find the most general antiderivative of the function. I also have to check my answer by differentiation. Would I have to find the derivative first? (I got 12x -8) What are the steps to solving a problem like this? No, don't do the derivative ...
*December 7, 2006 by Me*

**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 ...
*March 31, 2014 by helen*

**algebra**

i have two answers to this problem so am not sure which way I need to do in or should say the order i should do it. lease help??????? problem is 7x-5+3x=6+x-10 what is the order to work this out there is no brackets to this problem 7x-x+3x=6+5-10 6x+3x=11-10 8x=1 ------- 8 8 x...
*April 29, 2007 by Anonymous*

**English please check my answer**

please check to see if I have the right answer thank you The patient had a radiogram performed. What doed the root word indicate I think it's b
*March 20, 2008 by Dakotah*

**Math**

Hi, would someone mind just checking the answer I got for this formula and tell me if I'm on the right track or not. Question... x+y=21 3x=4y Answer I got... x=84 y= -63 I didn't get that. Check your math. I found 7y=63 but not y = 63. You can always check your answer. Is 4X...
*October 22, 2006 by Jessica*

**Management Accounting**

well i try to solve this problem but it look so complicated I need to cash buget what's the problem? check the problem i don't get it check the problem i don't get it
*November 8, 2006 by Erika Quezada*

**Math**

an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, 2, 6 -1, 1, 3, 5 -2, -4, -6, -8 -2, 2, 6, 10 3 points Question 3 Write the first ...
*July 17, 2012 by Tony*

**English please check my answer**

Please check my answer thank you Cardiology is the study of the heart. Which of the following terms describes the foundation upon which the medical word is built that usually relates to the body organ involved ? A. Prefix B. Suffix C. Root D. Combining form My answer is Root (c)
*March 19, 2008 by Dakotah*

**Math(Please Check)**

Problem: 4x/(x+2)-8/(x-1) What I Got: 4x^2-4x-16/(x+2)(x+1) *I had to simplify the rational expression No. At x=0, it doesn't check. The starting problem gives 8, your answer gives -8. I suspect a sign error somewhere. Probably in the denominator, the x+1 should be x-1
*March 5, 2007 by margie*

**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...
*August 23, 2012 by alejandro*

**math check question**

Subtract and Simplify: 4a^2/(a-b)-(4b^2-8ab)/(b-a) I have the answer as 4(a+b)^2/(a-b) or should it be 4(a-b)^2/(a-b) Responses Math problem check - bobpursley, Sunday, October 12, 2008 at 4:23pm just the numerator.. 4a^2-8ab + 4b^2, right? 4(a-b)^2 Now does that reduce with ...
*October 12, 2008 by Shawn*

**aims math<<<<need some one to check my answer**

okay this problem is simple... well my answer im unsure the answers i get arent an option. the problem is: 37-3[5+4(3-7)]
*March 28, 2011 by angiie*

**Math....Please help I have a deadline for tonight!**

Use the geometric sequence of numbers 1, 1/3, 1/9 , 1/27… to find the following: b) Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 10 terms? Carry all calculations to 6 decimals on all assignments. Answer: Show work in ...
*November 4, 2006 by Vianna*

**math**

for the following equations, write a word problem draw a picture, and find the solution to the equation. 5/12 - 1/3=? I know the answer is 1/12 but am stumped on how to write the word problem and draw a picture
*October 27, 2010 by m*

**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
*May 7, 2007 by mike*

**Precalculus**

A geometric series has t1 = 3 and r = 2. If tn = 96. What does n equal in this problem? What is the special name given to the terms between 3 and 96 in this problem?
*January 20, 2012 by Anon*

**Math>>>>if anyone could check my answer**

this problem is difficutl for me i have an answer but im unsure so if someone could check my answer please. heres my problem: A light year is the distance that a light travels through a vacuum (space without matter) in one year. A light year is about 9.46 x 10^12km. The ...
*March 31, 2011 by Angel*

**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?
*December 1, 2011 by Chloe*

**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...
*May 2, 2014 by TTR+S<3*

**alegbra**

Check this problem for me do I have negative sign right with the answer. -1(-1)+-5-5=-2/-10==-1/5 the one on top and the -1(-1) and on the bottom is -5-5. so check this answer for me. Please, Please
*March 7, 2009 by Elaine*

**alegbra**

Check this problem for me do I have negative sign right with the answer. -1(-1)+-5-5=-2/-10==-1/5 the one on top and the -1(-1) and on the bottom is -5-5. so check this answer for me. Please, Please
*March 7, 2009 by Elaine*

**English please check my answer**

Please check my answer thank you. Gastrectomy is listed as the principal procedure on the surgical report. You know that (-ectomy) means excision or surgical removal. What part of the medical word does "ectomy " represent ? A. Root B. Suffix C. Prefix D. Combining form My ...
*March 19, 2008 by Dakotah*

**Math**

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

**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
*January 15, 2009 by Anonymous*

**math word problem**

word problem need help: suppose you own a card shop. you buy one line of cards at a rate of 4 cards for $5. you plan to sell the cards at a rate of 3 cards for $5 how may carfds must you sell in order to make a profit of $100.00 i dont understand how to get answer can you help
*September 8, 2012 by marko *

**Algebra-Can you please check this Reiny**

Can you check this: x^-3y^2/x^2y^-4 I think the answer is y^6/x^5 Thanks for explaining the other problem
*October 6, 2010 by DeAnne *

**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?
*October 26, 2012 by Anonymous*

**Algebra**

how do I check my answer to a problem. The problem is: x/5 - 1/2 = 3 I know the answer is 35/2 but how do you check it. 35/2 /5 - 1/2 = 3?
*January 29, 2011 by Donna*

**Math word problem check**

The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water? what formula would be used to solve this problem? I used the formula of V = D/T T = D/V, you know that 78.2...
*November 9, 2008 by Shawn*

**math-word problem**

The width of a rectangle is fixed at 21cm. What lengths will make the perimeter greater than 80cm. Please help with this word problem I do not even know where to begin.
*July 31, 2010 by Michelle*

**Algebra**

Word Problem: Jack mows the lawn in 4 hours, mary mows the lawn in 5 hours. how long will it take them if they mowed the lawn together? I have a hard time figuring out which formula to use to solve a problem in a word problem can anyone help and tell me how to set up the ...
*October 18, 2008 by Laura*

**math**

please can anyone kindly help me to get the answer of this word problem,i would like someone to help me please for the word problem below...... Pat and Eric bought a large pizza that has 12 slices.Jane and Eric ate all the pizza .If Jane ate 4/6 slices, how much did Eric eat? ...
*February 13, 2011 by rowena*

**math,correction**

are these correct now i hope? Problem #1 simplify (m^2)/(8) divided by (m^5)/(16) My answer: (2)/(m^4) Problem #2 multiply (3x-30)/(x^2-4x) times (8x)/(10-x) My answer: (-6)/(x) No. 2/m^3 (3x-30)/(x^2-4x)* (8x)/(10-x) 3*(x-10)*8x /(x-10)(-1)(x)(x-4) x's divid out, the (x-10) ...
*April 22, 2007 by jasmine20*

**Math**

Create an addition word problem and a subtraction word problem using fractions. Show how to find the solution to each problem. Once you find the solutions to your problems, rewrite the solutions as either a terminating or nonterminating decimal.
*October 1, 2012 by Christian*

**word problem**

ok, this is probably a crazy question...but i just want to double check my answer. The question is: What is the least 9 digit number there is using the numbers 1-9 only one time. ??? 123456789 good, that makes me feel better. I was thrown by it at first,,,,kept wondering if i ...
*August 16, 2005 by Jara*

**Word Processing**

I'm a GranMa in my 60's trying to learn Word/Windows. I started with the 2nd course and have had only this one problem in 3 weeks so that is good. I don't think the answer to my problem is in the book for THIS course. I can't figure out how to use the commands with the ...
*October 11, 2007 by GranMa Cee*

**Math**

How do you create a word problem using unit rate? Please check the explanation at this site -- http://www.321know.com/rat-unit-rate.htm One of the most common word problems might be -- George averages 60 miles per hour when driving on a highway. How far will he go in three ...
*January 16, 2007 by Tom*

**English**

After you solve the cross word puzzle, using the answer words, complete the dialogue between a teacher and a student. Look at the first row, Across one starts with 's.' Down four contains one r. What is the suitable word for Down 1? Across 6 ends with l. What word is Across 6...
*April 15, 2009 by John*

**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) ...
*April 11, 2013 by jessie*

**algebra1**

the problem is 5f+7 less than or equal to 22. can anyone please work this out for me and check it for me? and what i mean by checking it is like when you get the answer you check it and make sure its write.
*October 1, 2013 by erica*

**math**

2.-The longest one-word name of any place in America is Chargoggagoggmanchauggagoggchubunagungamaugg.This name for a lake near webster, Massachusetts, is 45 letters long. It is a Native American name that means "You fish on you side, I'll fish on mine, and no one fishes in the...
*January 29, 2011 by Luis*

**Word problem check**

one summer, Van mowed 4 lawns for every 7 lawns mowed by Fiona. Together they mowed 132 lawns. How many did Fiona mow? I have the answer as 84 is that correct?
*October 12, 2008 by Shawn*

**chemistry**

Can someone help me to check my answer and the way I solve this problem is right or wrong? Determine the energy required to turn a Na metal atom into a gas phase ion (Na+ (g)). Ionization energy of Na(g) 499 kJ/mol Electron affinity of O(g)for2e- 603 kJ/mol Energy to vaporize ...
*September 7, 2012 by Jenny*

**Math**

Question 1 Write the first four terms of the sequence whose general term is given. an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, ...
*July 10, 2012 by Anonymous*

**Math PLEASE HELP PLEASE PLEASE PLEASE**

Question 1 Write the first four terms of the sequence whose general term is given. an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, ...
*July 10, 2012 by Tony*

**calculus**

Another problem: determine whether the series is convergent if so find sum it is the sum from k=1 to infinity of ((-1)^k)/(3^(k+1)) i found this series to be geometric where a=-1/9 and r=1/3 my answer was converges to 1/6
*February 21, 2008 by sarah*

**math**

Can someone please help me with this word problem!?! I know the answer which is 784 feet. But I have no clue how to solve it. Can someone please show how to solve this problem? The word problem is: The melt in Your Mouth Chocolate Factory is a rectangular building. The ...
*September 4, 2012 by aaron*

**Algebra**

Determine whether each sequence is arithmetic or geometric. Find the next three items. 1. 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.
*May 18, 2014 by Shelin*

**English**

1. Put two scrambled word pieces together and make one complete word. 2. There are scrambled word piece cards on the table. Find two scrambled word pieces which can become a word. 3. Combine two scrambled word pieces with each other and make a sentence. 4. Choose one word and ...
*August 31, 2009 by John*

**Math**

Which sequence do I use to get the answer to this problem? Arithmetic or geometric? The answer is $36,000 but I do not no how to write it out or which one to use, Can someone please help me? Thank you. A person deposited $500 in a savings account that pays 5% annual interest ...
*September 2, 2010 by Fh*

**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?
*April 14, 2012 by Greg*

**pre-alg**

I need help to create an addition word problem and a subtraction word problem using fractions. I need to show how to find the solution to each problem. Once I find the solutions to my problems, I have to rewrite the solutions as either a terminating or nonterminating decimal.
*October 16, 2013 by AudioslavedCobain182*

**math,correction**

Solve each of the following equations for x. Problem#1 (x)/(6) - (x)/(8) MY answer: x = 24 Problem #2 (x)/(x-2) - (x+1)/(x) = (8)/(x^2-2x) My answer is: 6 = x or x = 6 right on the first one. check your math on the second one. i've done it twice and both times got (-10).
*March 7, 2007 by jas20*

**Math 8R: Homework Check - Part 2 **

Part 2: Simplify by combining like terms and using the distributive property 11. 3x + 5x Answer: 8x 12. 3x + 5y - 2x + 8, Answer: 1x + 5y + 8 13. 9 + 5m + 6b - 2m - 4, Answer: 3m + 5 + 6b 14. 3ab + 6c - ab + 10 - 2c, Answer: 2ab + 4c + 10 15. 6(m+3), Answer: 6m + 18 16. 8(x-2...
*October 28, 2012 by Laruen*

**geometric problem-math**

in triangle ABC,side AB IS 2cm. shorter than side AC, while side BC is 1cm. if the perimeter is 62 find the lenght of three sides? i need the answer tomorrow pls... help me
*July 2, 2011 by aira*

**3rd grade**

My son has this Math word problem and I can come up with the answer but, I don't know how to explain to him how I got the answer. The problem is:Lauren has collected 150 nickles and dimes. She has 70 more nickles than dimes. How many nickles and how many dimes does she have?
*October 8, 2008 by Kathy*

**Math 116 algebra please check**

Solve 0.3x + 8 < 1.1x-9 The solution is x > 85/7 The problem with the greater than sign has a line under it but I can get it to work correctly from my word document
*July 16, 2008 by jay jay*

**multiplying fractions**

write a word problem for 1/3 x 1/4 use the definition of multiplication and math drawing to help determine the answer. explain you answer.
*April 24, 2014 by bernadette*

**Math**

Actually, i made a mistake. All though we still came up with the right answer, I made a mistake and copied another book answer to another question into this question. The real book answer to this word problem is: ( Let's translate the English into Math: x+3x=60, so x=15 and ...
*August 9, 2007 by Mack*

**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" ...
*June 22, 2013 by Shin*

**Algebra**

Would someone please check these answers? Simplify. 3/x-5+1/1-4/x-5 For this answer I got: x-2/x-9 Divide. x^2-49y^2/6x^2+42y/(x^2-7xy) For this answer I got: (x+7y)/6x(x^2+7y) Add. Express your answer in simplest for. x/6+3x/6 For this answer I got: 2x/3 Please check my ...
*July 12, 2007 by Linda*

**geometric series**

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

**Pre-Calc-Please check answer**

1.Write 4+6+8+10 in sigma notation: I came up with sigma in the middle 3 on top j=0 on the bottom 2n+4 to the right of the signma sign 2. Find the 10th term of the sequence -1/5,-1/20,-1/80 this was a geometric sequence so I said a(subscript10) = -1/5*1/4^(10-1) =-1/5*(1/4)^9...
*December 15, 2011 by Sandra *

**Pre-Calc-Please check answer**

1.Write 4+6+8+10 in sigma notation: I came up with sigma in the middle 3 on top j=0 on the bottom 2n+4 to the right of the signma sign 2. Find the 10th term of the sequence -1/5,-1/20,-1/80 this was a geometric sequence so I said a(subscript10) = -1/5*1/4^(10-1) =-1/5*(1/4)^9...
*December 15, 2011 by Sandra *

**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...
*February 17, 2008 by Anonymous*

**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.
*March 10, 2013 by Olivia*

**Science - Please Check my Answer**

My problem: A swimmer travels from the south end to the north end of a 30.0 m pool in 15.0 s and makes the return trip to the starting position in 19.0 s. What is the average velocity for the second half of the swim? My answer: 1.60 m/s to the south Please check! I will really...
*February 27, 2014 by Brady*

**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?
*June 19, 2013 by Mathslover*

**calculus**

I'm having trouble with a geometric series problem. Determine if the infinite summation of (-3)^(n-1)/4^n converges or diverges. If it converges, find the sum. So the answer says that sigma -3^(n-1)/4^n = 1/4 * sigma (-3/4)^(n-1) How did they factor out the 1/4? My algebra is ...
*May 24, 2013 by Jace*

**Physics check**

I just want somebody to check my answer on this problem please :-) There is a box which weighs 1000 kg. There is an applied force acting upon it with a force of 20000 N (horizontally). The mu is 1.2. What is the acceleration (again, horizontally) of the object? I got 8.24 m/s^...
*November 5, 2007 by Emily*

**Geometric Series (bobpursley)**

Could you please check my same post again, I had another question.
*September 19, 2011 by Anonymous*

**algebra**

Can someone please help me with this problem? Thanks! Evaluate the infinite geometric series: 8+4+2+1+... I thought you needed to know the number of terms to evaluate, but how do you know them if it is infinite? The limit of Sn = 1 + r + r^2 + r^3 + r^4 + = 1/(1 - r) -1 < r...
*May 30, 2007 by Mercy*

**math**

Please check this problem to see if I answer correctly x - 3 > 8 Answer x > 11
*September 3, 2008 by jay jay*

**math**

just want to check if my answer is right for this problem: 4+[20/4)*2] + [(2*8)/4]=18 is the answer 18?
*October 22, 2013 by Anonymous*

**math,correction**

Can someone correct these for me plz... Problem#6 Factor. x(x-5)-2(x-5) My answer is: (x-2)(x-5) Problem#7 Factor completely. x^2-x-6 My answer is: (x+2)(x-3) Problem#8 Factor completely. 35x^2+40x+5 My answer is: (7x+1)(5x+5) Problem #9 Factor by grouping. x^3-5x^2+2x-10 MY ...
*February 28, 2007 by jas20*

**Word problem math**

Word problem. You cut a 2 m long board into 2 pieces . One piece is 10 cm shorter than the other. How long are each boards.? I got. 1 pc at 80!cm. the other 1pc at 100 cm Is this right ?
*October 14, 2012 by Marco*

**english**

the guide words at the top of the two dictionary pages are exploratory and exuberant which word would not be found between these guide words a-express b-external c-extrude d-exactly Which word do you think does not come between expl- and exub? If you post your answer, we'll be...
*July 24, 2007 by mario*

**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,(-...
*January 18, 2011 by nicole*

**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 ...
*June 18, 2007 by Ace*

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