Wednesday

February 10, 2016
**Math (arithmetic)**

The total seating capacity of an auditorium is 1,065. The first row has 21 seats arithmetic series and each row has one seat more than the row in front of it. How many rows of seats are there in the auditorium?
*Thursday, June 25, 2015 by Roxane*

**ALGEBRA**

the arithmetic mean of two numbers exceeds their geometric mean by two. find the numbers if one is 40 less than the other? help me please to solve this...
*Saturday, June 20, 2015 by CASS*

**ALGEBRA**

the arithmetic mean of two numbers exceeds their geometric mean by two. find the numbers if one is 40 less than other? please help me to answer this homework.
*Saturday, June 20, 2015 by Bea*

**math**

How many terms are there In an arithmetic Sequence with a common different of 4 and with the first and last term 3 and 59 Respectively.
*Friday, June 19, 2015 by nicole*

**Maths**

2,x,y are the first three terms of an arithmetic sequence.If the 2nd term is decreased by 1.The three terms will form a geometric sequence.calculate x and y and my working out is that if i said x-1
*Tuesday, June 16, 2015 by Luhle qwabe*

**algebra 2**

find the sum of the arithmetic series 13+11+9+...+(-25)
*Tuesday, June 9, 2015 by reina bonilla *

**Math**

What is the difference of the arithmetic sequence 7p+2, 5p+12, 2p-1?
*Saturday, June 6, 2015 by Paps olarte*

**Math**

Find p so that 7p+2, 5p+12, 2p-1 ... form an arithmetic sequence.
*Saturday, June 6, 2015 by Paps olarte*

**Math**

Form an arithmetic sequence by finding p in the numbers 7p+2, 5p+12, 2p-1...
*Saturday, June 6, 2015 by Paps olarte*

**Math: Arithmetic Sequence.**

the 3rd of an Arithmetic sequence is 8 of the 16th term is 47. Find a subed 1 and the common difference. Construct the sequence.
*Thursday, June 4, 2015 by Jan*

**mathematics**

1.1 the third term of an arithmetic sequence is 8 and the 15 term is 44 . Calculate: 1.1 the common difference and first term. 1.2 the sum of the first 50 terms. 1.2 1;4;7;10.... Is an arithmetic sequence .find: 1.2.1 the 30 term.
*Tuesday, May 19, 2015 by tankiso*

**math**

The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16. Find S20
*Monday, May 18, 2015 by Rose*

**math**

The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16. Find S20
*Sunday, May 17, 2015 by Yiu*

**math**

The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16? Find S20
*Saturday, May 16, 2015 by Yiu*

**math**

The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16? Find S20
*Saturday, May 16, 2015 by rose*

**Math**

The sixth term of an arithmetic sequence is 20.6 and the 9th term is 30.2. Find the 20th term and find the nth term.
*Wednesday, May 13, 2015 by Anonymous*

**precalculus no clue**

Identify if the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic or geometric, then find the next term. and write the nth term. . t-3,t-2, t-1, t... . 1,-3/2,2,-5/2....
*Saturday, May 9, 2015 by Anonymous*

**precalculus**

Identify if the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic or geometric, then find the next term. and write the nth term. . t-3,t-2, t-1, t... . 1,-3/2,2,-5/2....
*Saturday, May 9, 2015 by Anonymous*

**college precalculus I still dont get it**

Identify if the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic or geometric, then find the next term. and write the nth term. 1. t-3,t-2, t-1, t... 2. 3/4,1/2,1/3,2/9... 3. 1,-3/2,2,-5/2....
*Saturday, May 9, 2015 by kendrick*

**maths**

The 5th term of an arithmetic sequence is 11,12th term is 32.What are the first 3 terms?
*Saturday, May 9, 2015 by Anonymous*

**college precalculus**

Identify if the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic or geometric, then find the next term. and write the nth term. 1. t-3,t-2, t-1, t... 2. 3/4,1/2,1/3,2/9... 3. 1,-3/2,2,-5/2....
*Saturday, May 9, 2015 by Kendrick*

**Algebra**

The following problem refers to an arithmetic sequence. If a_4 = 15 and a_10 = 39, find a_40 and S_40. The _ represents subscript
*Wednesday, May 6, 2015 by Merty*

**Math**

1.) What is the formula for the nth term of the arithmetic sequence that has a common difference of 8 and a first term of 4? 2.) What is the formula for the nth term of the geometric sequence that has a first term of 2 and a ratio of 3?
*Thursday, April 30, 2015 by Jamie*

**Math**

I need help with sequences 2,1,1/2,1/4,... Is this arithmetic, geometric,neither, or both (geometric?) 7,9,11,13 arithmetic, geometric,neither, or both. (arithmetic?) 1,2,4,8... Whats the rule think the rule is: Start with one and multiply by two repeatedly 50,40,30,20 Rule ...
*Friday, April 24, 2015 by Amber*

**math**

The 9th term of an arithmetic sequence is 12 and the 17th term is 28, find the 4th term of the arithmetic sequences
*Friday, April 24, 2015 by Lillian *

**Math**

identify the sequence as arithmetic, geometric, or neither. Explain your answer. 1.6, 0.8, 0.4, 0.2. plz help me I'm really confused.
*Thursday, April 23, 2015 by Abby *

**math**

if 4th term of an arithmetic progression is 3 times the 1st term nd 7th term exceeds twice the third term by 1. find the first term and common difference
*Monday, April 20, 2015 by anandita*

**MATHEMATIC DEPARTMENT**

The second, third and ninth terms of an arithmetic progression forms the first, second and third terms of a geometric progression. Find the common ratio and hence the eleventh term of geometric progression.
*Monday, April 20, 2015 by Mr. Bett*

**Math**

In an arithmetic series, the sum of the 5th to the 8th terms inclusive is 114, whilst the sum of the 12th to 15th terms inclusive is 198. What is the 21st term? I have got 99=2a +3d and 57= 2a+3d Im not sure what to do now
*Saturday, April 18, 2015 by Fasi*

**math**

The 5th term of an Arithmetic Progression is 8 and the 12th term is 50. Determine the sequence
*Saturday, April 18, 2015 by marry*

**Math**

Hi! Can someone help me with this? Thanks a bunch! Find the 10th partial sum of the following arithmetic sequence. 0.50, 0.9, 1.3, 1.7.....
*Friday, April 17, 2015 by Kayla*

**Math**

7. You are having a discussion about sequences with your classmate. She insists that the sequence 2, 3, 5, 8, 12 must be either arithmetic or geometric. Is she correct or incorrect? Explain.
*Friday, April 17, 2015 by Alex*

**Algebra**

5. The local soccer team won the championship a several years ago, and since then, ticket prices have been increasing $20 per year. The year they won the championship, tickets were $50. Write a recursive formula for a sequence that will model ticket prices. Is the sequence ...
*Thursday, April 16, 2015 by Sandra*

**Math**

1.) In the following problem, write the first five of the terms of the arithmetic sequence. a1=16.5 d=0.25 2.) Find a the correct formula for the an for the arithmetic sequence. a1=-1 d=5
*Thursday, April 16, 2015 by Lala*

**Math**

Determine whether this sequence is arithmetic or geometric. Find the next three terms. 4. 3, 12, 21, 30, .... A.40, 50, 60 B.38, 46, 54 C.39, 48, 57 D.36, 32, 39 A? Thank you
*Thursday, April 16, 2015 by Morgan*

**Math**

Determine whether this sequence is arithmetic or geometric. Find the next three terms. 81, 27, 9, 3, . . . A. arithmetic, 0, –3, –6 B. geometric, 0, –3, –6 C. geometric, 1,1/3 , 1/9 D. The sequence is neither geometric nor arithmetic. Is the answer C? Thank...
*Thursday, April 16, 2015 by Morgan*

**Math**

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 D. The sequence is neither arithmetic nor geometric sequence. B? Thank you
*Thursday, April 16, 2015 by Morgan*

**Math**

Determine whether each sequence is arithmetic of 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. This sequence is neither arithmetic or geometric. Is the answer C? Thank you
*Thursday, April 16, 2015 by Morgan*

**MATH**

whats the answer to this? write an equation fr an arithmetic sequence with a 1st term of 8 and 4th term of -7. im stuck.
*Tuesday, April 14, 2015 by Samanta*

**math**

find the first 3 term s of an arithmetic sequence in which the 21 term is -54 and the fifteenth term is -170
*Tuesday, April 14, 2015 by Anonymous*

**Pre-calculus **

The sum of the first two terms of an arithmetic series is 13 and the sum of the four terms is 46. Determine the first six terms of the series and the sum of the first six terms.
*Sunday, April 12, 2015 by Tawana *

**Algebra**

find the value of p so that p+5, 4p+3, and 8p-2 will from successive terms of an arithmetic sequence, then find the three successive terms.
*Thursday, April 9, 2015 by cay*

**math**

The 1st,5th,13th term of an arithmetic sequence are the first 3 terms of geometric sequence with a common ratio of 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence.
*Thursday, April 9, 2015 by zack*

**Math**

4. Which explains why the sequence 81, 3, 1/9,... is arithmetic or geometric? A)The sequence is arithmetic because it decreases by a factor of 1/27 B)The sequence is geometric because it decreases by a factor of 1/27 C)The sequence is arithmetic because it decreases by a ...
*Tuesday, March 31, 2015 by Jeff the Killer Hates Math*

**Math Help!!!**

identify the sequence as arithmetic, geometric, or neither. explain your answer. 1.6 , 0.8 , 0.4 , 0.2 ....
*Friday, March 27, 2015 by math help asap*

**math**

Find the 6th term of the arithmetic sequence given an = (1/5)an-1, given a1 = 20
*Wednesday, March 25, 2015 by krome*

**Math Help!!!**

determine whether each sequence is arithmetic or geometric. find the next three terms. 1. 14,19,24,29.... geometric, 34,39,44 arithmetic,32,36,41 arithmetic 34,39,44**** the sequence is nether geometric nor arithmetic 2. -4,8,-16,32.... arithmetic. 64,128,256 geometric -64,128...
*Tuesday, March 24, 2015 by help asap*

**Math**

Which explains why the sequence 64, 4, 1/4,... is arithmetic or geometric? A. The sequence is geometric because it decreases by a factor of 1/16. B. The sequence is arithmetic because it decreases by a factor of 1/16. C. The sequence is geometric because it decreases by a ...
*Tuesday, March 24, 2015 by Angel*

**arithmetic**

second term is 8 and fourth term is 14.find the first term and the common difference.
*Monday, March 23, 2015 by kagai*

**Math**

1. A door has a lock with a 5-digit keypad. To unlock the door, a person must enter a passcode consisting of three different digits, with each digit entered in the correct order. What is the probability that a randomly chosen passcode consisting of three different digits ...
*Sunday, March 22, 2015 by Linda*

**Advanced Algebra**

The arithmetic progression has first term 4 and last term 34. If the sum of its terms is 247, find the number of terms and their common difference.
*Friday, March 20, 2015 by Ina*

**Arithmetic Reasoning**

A team won 8 of the 24 games it played in one season. What percent of games did it win?
*Friday, March 20, 2015 by Gotta pass these word prblem math test*

**mathematic**

determine the arithmetic sequence that has the seventh term equal to 3 and the twelfth term equal to -3
*Thursday, March 19, 2015 by thulani*

**math**

32, k 3 , are three consecutive arithmetic terms find k
*Thursday, March 19, 2015 by rachel*

**Math**

Is 2, 3, 5, 8, 12 arithmetic, geometric, neither, or both?
*Wednesday, March 18, 2015 by Riccardo Arjona*

**7th grade math**

For questions 1, 2 identify each sentence as arithmetic, geometric both or neither. 1) 7, 9, 11, 13 ...... A) arithmetic B) geometric C) both D) neither (my answer) 2) 2, 1, 1/2, 1/4, .... A) arithmetic B) geometric C) both (my answer) D) neither
*Wednesday, March 18, 2015 by Ashley*

**Math**

Find the 10th term of a nonconstant arithmetic sequence whose 1st term is 3 with the 1st, 4th, and 13th term forming a geometric sequence. I've tried doing it differently everytime, but I always come to a dead end..
*Saturday, March 14, 2015 by Anon*

**Math**

1. The sequence log2 32, log2 y, log2 128, ... forms an arithmetic sequence. What is the value of y? 2. If log a^2 b^3 = x and log (a/b) = y, what are the values of log a and log b?
*Friday, March 13, 2015 by Lily*

**Math**

1. Find all values of p so that 6p, 4p-1, p^2 - 1 will be an arithmetic sequence. 2. The common ration of a geometric sequence is -3. IF the terms of this sequence are 3y, y+6, z+1, ..... respectively, what is the value of z?
*Friday, March 13, 2015 by Lily*

**Algebra**

In an arithmetic sequence where a6=13 and a10=25, what is the explicit formula for the general term an?
*Thursday, March 12, 2015 by Marie*

**Arithmetic Progressions **

The second term of an arithmetic progression I four times the fits term, and the first term is ten. Find the common difference and hence find the sum of the first 12 terms.
*Tuesday, March 10, 2015 by Steph*

**Algebra**

What are the first four terms of an arithmetic sequence if the common difference is 1.5 and the first term is 15? 15,30,45,60 15,16.5,18,19.5 15,22.5,33.75,50.625 none of the above What are the first four terms of a geometric sequence if the common ratio is 10 and the first ...
*Monday, March 9, 2015 by Jeff*

**addmath A.P.**

An arithmetic progression has 8terms.The sum of all 8terms is 180 and the sum of all odd terms is 80. Calculate (a)the first term and common difference (b)the last term
*Sunday, March 8, 2015 by mandy*

**Math ASAP**

2, 1,1/2 , 1/4 , . .. arithmetic geometric both neither I don't know how to solve it?
*Saturday, March 7, 2015 by SmartyPants*

**math**

The third,sixth and seventh terms of a geometric progression(whose common ratio is neither 0 nor 1) are in arithmetic progression. Prove dat d sum of d first three is equal to d fourth term
*Friday, March 6, 2015 by toyinbo*

**math**

the first term of the arithmetic sequence is -37 and the second term is-30 what is the smallest positive term of the sequence?
*Wednesday, March 4, 2015 by Ola*

**math**

the first term of the arithmetic sequence is -37 and the second term is-39 what is the smallest positive term of the sequence?
*Wednesday, March 4, 2015 by Ola*

**arithmetic**

a reguler hexagon is to be cut from a sheet of diameter D.what are width across corners?
*Thursday, February 26, 2015 by uday*

**Arithmetic**

2 numbers, when multiplied by achother, equals(-70) but when added to gether it equates to 3. What are these two numbers?
*Tuesday, February 24, 2015 by INeedHelp*

**Math**

The 5th term of an arithmetic sequence is 22 and the 15th term is 62. Find the 100th term and the sum of the first 60 terms.
*Monday, February 23, 2015 by Anonymous*

**Algebra**

The fifth term of an arithmetic sequence is 22 and the 15th term is 62. Find the 100th term and the sum of the first 60 terms
*Sunday, February 22, 2015 by Rachel*

**Math**

The fifth term of an arithmetic sequence is 22 and the 15th term is 62. Find the 100th term and the sum of the first 60 terms. I'm having trouble figuring out how to do this.
*Saturday, February 21, 2015 by Lilly*

**Algebra 2**

A large asteroid crashed into a moon of a planet, causing several boulders from the moon to be propelled into space toward the planet. Astronomers were able to measure the speed of one of the projectiles. the distance (in feet) that the projectile traveled each second, ...
*Wednesday, February 18, 2015 by Nicole*

**mathematics**

The sum of the first n term of ab arithmetic series is given by Sn=5/2n^2+7/2n Determine the first term and the common different and the tenth term
*Sunday, February 15, 2015 by mapule*

**pre cal 11**

i am stuck at a question that is asking for the common difference, first term, and general term for the arithmetic sequence the question is t10=50 and t27=152 i found my d=6 and t1=(-4) so know my equation is: tn=(-4)+(n-1)6 i had asken my teacher to tell me what the general ...
*Friday, February 13, 2015 by jessica*

**pre cal 11**

hi so i am stuck at this question that is asking about arithmetic sequence . Five fence posts are equally spaced between two corner posts that are 42 meter apart. how far apart are the five fence posts. i know the answer is 7m but i dont know how plus i know the equation for ...
*Friday, February 13, 2015 by jessica*

**Math 20-1**

Determine whether each sequence is geometric, arithmetic, or neither. Justify your answer. (1/5), (1/4), (1/3), (1/2), 1...
*Friday, February 13, 2015 by Joweria*

**arithmetic progressions**

how to know whether i should use formulaes in this question or that question becoz i colllapsed and put the formulae to another question
*Monday, February 9, 2015 by vanisri*

**math**

The third and fifth term of an arithmetic progression are 10 and-10 respectively. a)Determine the first and the common difference t3 = a + 2d = 10 t5 = a + 4d = -10 -a -2d = -10 a + 4d = -10 2d = -20 d = -10 a + 2(-10) = 10 a -20 = 10 a = 30; d = -2 b)The sum of the first 15 ...
*Sunday, February 8, 2015 by kudu*

**MATH**

THE FIRST AND LAST TERMS OF AN ARITHMETIC SERIES IS 5 AND 61 RESPECTIVELY WHILE THE SUM OF ALL THE TERMS IS 957. DETERMINE THE NUMBER OF TERMS IN THE SERIES.
*Tuesday, February 3, 2015 by CLARENCE KHUMALO*

**Math **

Identify the sequence as arithmetic, geometric, or neither. Explain the answer. 1.6, 0.8, 0.4, 0.2,...... I m not sure please help
*Monday, February 2, 2015 by BUBBLES*

**math**

The first, the third and the seventh terms of an increasing arithmetic progression are three consecutive terms of a geometric progression. In the first term of the arithmetic progression is 10 find the common difference of the arithmetic progression
*Monday, February 2, 2015 by kudu*

**math **

The sum of the first 10 term of an arithmetic sequence is 145 and the sum of the fourth and ninth term is five times the third term. Determine the first term and constant difference.
*Sunday, February 1, 2015 by matso *

**math**

in an arithmetic sequence the common difference is equal to 2.the first term is also the first term of a geometric sequence. the sum of the first 3 terms of an arithmetic sequence and the sum of the first 9 terms of an arithmetic sequence form the 2nd and 3rd terms of a ...
*Friday, January 30, 2015 by Brainblocked*

**arithmetic**

Determining the first three terms of an ArithmetiC progressionof which the (a.)10th term is 31 and the 15th term is 49 (b.)7th term is 3 and 12th term is -3 (c.)5th term is 8 and the 11th term is -28 (d.)9th term is7+9x and d=2x,Show all calculations
*Tuesday, January 27, 2015 by Thandi Mstletoe*

**MATH!!**

~Determine whether each sequence is arithmetic or geometric fund the next three terms~ *Doing a math unit test and stuck on these five* 1.14,19,24,29.... 2.-2,8,-16,32... 3.81,27,9,3... 4.What are the first four terms of an arithmetric sequence if the common diffrence is 1.5 ...
*Tuesday, January 27, 2015 by Makayla<3*

**maths**

X,4x+5 and 10x-5 are the first three terms of an arithmetic sequence. Determine the value of X.
*Sunday, January 25, 2015 by Thando Mtembu*

**math**

What is the value of the 30th term in the following arithmetic sequence? 12, 6, 0, -6, ...
*Friday, January 23, 2015 by Jobe*

**Math**

In an arithmetic sequence the seventh term exceeds the fourth term by 15 determine the common difference
*Thursday, January 22, 2015 by Restoration*

**Trig/Precalc**

Two questions that I would really appreciate some hints on: 1) Circles with centers (2,1) and (8,9) have radii 1 and 9, respectively. The equation for a common external tangent can be written in the form y=mx+b with 0<m. What is b? 2) In triangle ABC, AB=BC, and BD is an ...
*Tuesday, January 20, 2015 by majorbill*

**arithmetic**

0.2[5.28-(0.7)=
*Monday, January 19, 2015 by Anonymous*

**math**

The sum of first 12 terms of an arithmetic series is 186, and the 20th term is 83. What is the sum of first 40 terms?
*Sunday, January 18, 2015 by josh *

**Arithmetic **

The Gardiner dam located 100 km south of Saskatoon is largest earth filled dam in the world. Upon it's opening in 1967, engineers discovered that the pressure from lake deifenbaker had moved the clay based structure 200 cm downstream. Since then, then the dam has been ...
*Sunday, January 18, 2015 by hinata*

**Mathematics arithmetic sequence**

The sum of second and sixth terms of an arithmetic sequence is 4. The third term is 24 more than eleventh term. So determine the first three terms of the sequence.
*Sunday, January 18, 2015 by Mirriam*

**MATHEMATICS**

THE FIFTH TERM OF AN ARITHMETIC SEQUENCE IS 23 AND THE 12TH TERM IS 72.AND THEY SAY DETERMINE THE FIRST THREE TERMS OF THE SEQUENCE AND NTH TERM
*Sunday, January 18, 2015 by LERATO*

**Mathematics**

Deternine the formula of the nth term of the sequence if the sum of the second and sixth terms of an arithmetic sequence is 4.the third term is 24 more than the leventh tern
*Friday, January 16, 2015 by Rabelani*

**Maths**

The first, third and ninth terms of an arithmetic sequence form the terms of a geometric sequence. Find the common ratio of the geometric sequences. a, a+2d, a+8d a+2d/a = a+8d/a+2d ?
*Friday, January 16, 2015 by Michael*

**mathematics**

if the sum of the 6th and 7th terms of an arithmetic progression is 60 and the 3rd term is -5 find the common difference
*Sunday, January 11, 2015 by Bella*

**math**

I would need help with example: The three numbers are consecutive terms of arithmetic progression and the sum of their second powers is 126. The first number 3 times smaller, the second number with no change and the third number 4 times greater, are the 3 consequtive terms of ...
*Sunday, January 11, 2015 by Viktoria*

**math**

I would need help with example: The sum of three consecutive terms of geometric progression is 9. The first number with no change, the second number plus 12 and the third number minus 3, are the 3 consequtive terms of arithmetic progression. What are the values of original 3 ...
*Saturday, January 10, 2015 by Viktoria*