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March 2, 2015

March 2, 2015

**Recent Homework Questions About Arithmetic**

Post a New Question | Current Questions

**Mathematics**

The 25 term of an Arithmetic Progression is 7 1/2 and the sum of the first 23 terms is 98 1/2. Find the i. 1st term ii. common difference iii. sum of the first 30 terms
*Wednesday, December 11, 2013 at 7:25pm*

**Precal**

Find x such that -8 x - 3, 3 x - 1, and 2 x + 49 are consecutive terms of an arithmetic sequence. x=?
*Friday, November 29, 2013 at 10:47pm*

**Math**

Tell whether the sequence is arithmetic. If it is, write a function rule to represent it. 0.2, -0.6, -1.4, -2.2 This is an arithmetic sequence, but I do not understand the function rule of A(n) = 0.2 - 0.8(n-1), which is the given answer.
*Sunday, November 17, 2013 at 3:47pm*

**Math help please**

1. Each time a touchdown is scored in a football game, 6 points are added to the score of the scoring team. A team already has 12 points. What rule represents the number of points as an arithmetic sequence when n is the number of touchdowns scored? A(n) = 12 + 6n A(n)12 - (n...
*Thursday, November 14, 2013 at 7:58pm*

**math**

What is the 32nd term of the arithmetic sequence where a1 = -32 and a9 = -120?
*Friday, November 8, 2013 at 4:09pm*

**physics**

Suppose a ball of putty moving horizontally with 1kg.m/s of momentum collides and sticks to an identical ball of puffy moving vertically with 1 kg.m/s of momentum. Why is their combined momentum not simply the arithmetic sum, 2 kg.m/s?
*Friday, November 8, 2013 at 12:57am*

**Math-Trigonometry**

Show that if x, y, and z are consecutive terms of an arithmetic sequence, and tan y is defined, then (sin x + sin y + sin z) / (cos x + cos y + cos z) = tan y. So I tried letting x = y-k (since x,y,z are consecutive terms of an arithmetic sequence), then z= y+k So we get (sin(...
*Thursday, November 7, 2013 at 1:38pm*

**math**

Find the 7th term of arithmetic progression...12,20,28.
*Monday, October 28, 2013 at 1:41am*

**arithmetic**

If 48 marbles are to be divided between Bill and Carl in the ration 3:5, how many marbles will Bill get?
*Friday, October 25, 2013 at 2:12pm*

**math**

The terms 4x + 36, 2x - 6, and 3x - 27 are consecutive terms in an arithmetic sequence. What is the value of x ?
*Friday, October 25, 2013 at 1:23pm*

**arithmetic**

round .44857 to the nearest hundreths?
*Friday, October 25, 2013 at 12:49am*

**arithmetic**

5. Assume that if students buy more than $250 of art supplies in one visit, they may put the charge on a student account with terms of 2/10 EOM. If a student makes the purchase on September 16, on what day does the 2% discount expire? If the purchase is made on September 26, ...
*Sunday, October 20, 2013 at 8:57pm*

**Geometry **

Please answer at least one . PLEASE 1. Triangle XYZ has a right angle at Y. V,W are on XZ such that XV=XY. WZ=YZ, find ANGLE VYW . 2. STUVWXYZ is a regular octagon. Find SW/ TZ. 3. The interior angles of a convex polygon form an arithmetic progression with a common difference ...
*Saturday, October 19, 2013 at 9:13am*

**arithmetic**

How do you solve this for h? A=1/2(b1 plus b2)?
*Tuesday, October 8, 2013 at 9:37pm*

**Math**

how many terms of the arithmetic sequence -5,-1,3,… must be added to reach the sum of 400
*Monday, October 7, 2013 at 8:48pm*

**arithmetic**

2+15/3*5=
*Sunday, October 6, 2013 at 2:39pm*

**math**

the arithmetic series 1 + 4 + 7 + ....tn has a sum of 1001. how many terms does the series have?
*Thursday, October 3, 2013 at 9:46pm*

**math **

x, y, 3y If the average (arithmetic mean) of the 3 numbers above is 3x and x≠0, What is y in terms of x?
*Saturday, September 28, 2013 at 12:30pm*

**math **

x, y, 3y If the average (arithmetic mean) of the 3 numbers above is 3x and x≠0, What is y in terms of x?
*Saturday, September 28, 2013 at 11:41am*

**algebra 1**

Tell whether the sequence is arithmetic. If the sequence is arithmetic, write a function rule to represent it. 12, –9, 6, –3, ...
*Tuesday, September 24, 2013 at 5:45pm*

**algebra**

I need to find the first five terms in the arithmetic sequence in an =(2)^n-1 n=1 I don't know now to type the n's smaller.
*Saturday, September 21, 2013 at 1:48am*

**arithmetic**

28,000 X .05% compounded for 33 years =
*Thursday, September 19, 2013 at 2:46am*

**arithmetic**

If I WALK FROM MARKER 8.8 MILE TO MARKER 11.8 MILE HOW FAR IS THAT?
*Sunday, September 15, 2013 at 8:26pm*

**Math**

Alpha writes the infinite arithmetic sequence 10, 8, 6, 4, 2, 0... Beta writes the infinite geometric sequence 9, 6, 4, 8/3, 16/9,... Gamma makes a sequence whose n^th term is the product of the n^th term of Alpha's sequence and the n^th term of Beta's sequence: 10*9,8...
*Sunday, September 15, 2013 at 12:49pm*

**Math**

1. Select the first five terms in the arithmetic sequence an= 2 n , starting with n =1 A. ( 1 / 2 , 1/4 ,1/6, 1/8, 1/10) B. ( 1 , 2 , 3 , 4 , 5 ) C. ( 3 , 4 , 5 , 6, 7 ) D. ( 2 , 4, 6 , 8, 10 ) My answer is D. 2. Select the first five terms in the geometric sequence an = ( 2...
*Saturday, September 14, 2013 at 12:57pm*

**Math - Averages**

Six dogs have an average(arithmetic mean) weight of 55 pounds. If the heaviest dog weighs 100 pounds, the lightest dog weighs 5 pounds, and the second-lightest dog weighs 30 pounds, what is the average weight of the other 3 dogs in pounds?
*Friday, September 13, 2013 at 11:38am*

**Math - Averages**

The test average for Louis' calculus class is found by taking the arithmetic mean of his four best test scores. If his first four test scores are 65,82,76 and 87, what score must he get on the fifth test to raise his test average to an 85?
*Friday, September 13, 2013 at 11:04am*

**MaTh**

Let a_1, a_2, . . . , a_10 be an arithmetic sequence. If a_1 + a_3 + a_5 + a_7 + a_9 = 17 and a_2 + a_4 + a_6 + a_8 + a_{10} = 15, then find a_1.
*Monday, September 2, 2013 at 3:03pm*

**arithmetic**

after 12 years, ria will be 3 times as old as she was 4 years ago. find her present age.
*Tuesday, August 27, 2013 at 11:59am*

**mathematics**

the arithmetic mean of x,y and z is 6 while that of x,y,z,t,u,v and w is w. Calculate the arithmetic mean of t,u,v and w.
*Saturday, August 24, 2013 at 10:45am*

**math**

the arithmetic mean of x,y and z is 6 while that of x,y,z,t,u,v and w is 9. Calculate the erithmetic mean of t, u, v and w
*Saturday, August 24, 2013 at 10:29am*

**arithmetic**

7.86x 4.6=
*Monday, August 12, 2013 at 5:45pm*

**arithmetic progression**

the 9th term of an AP is 52 while the 12th term is 70. find the sum of it's 20th term?
*Tuesday, August 6, 2013 at 8:19am*

**Algebra/Number Theory**

In a sequence of four positive numbers, the first three are in geometric progression and the last three are in arithmetic progression. The first number is 12 and the last number is 452. The sum of the two middle numbers can be written as ab where a and b are coprime positive ...
*Tuesday, July 23, 2013 at 1:29pm*

**math**

bob make 720 telephone calls each year. what is the average (arithmetic mean) number of calls that bob makes per month 60 70 80 100 120
*Tuesday, July 16, 2013 at 3:38pm*

**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 ...
*Saturday, June 22, 2013 at 3:08am*

**Calculus**

An arithmetic progression has terms a8 =23 and a20 =83 . What is the value of the term a12
*Tuesday, June 18, 2013 at 10:13am*

**arithmetic**

there is a unique number of which the square and the cube together use all numbers from 0 up to 9 exactly once. which number is this ?
*Tuesday, June 18, 2013 at 12:34am*

**Maths**

The third term of a sequence is 2(2/3) and the sixth term is 9. Find the first six terms when the sequence is; (a) arithmetic (b) geometric
*Monday, June 17, 2013 at 9:38pm*

**Arithmetic Sequence Help!**

The sum of 3 consecutive terms of an arithmetic sequence is 165. The second of these terms is 11 times the first. Find the 3 terms From what I gathered: S(3) = 165 t(2)= 11(t1) The given formulas are: Sn= n/2[2a+(n-1)d] and tn=a+(n-1)d I have no idea how to continue.
*Monday, June 17, 2013 at 2:25pm*

**Maths**

How to find Geometric mean if arithmetic and harmonic mean is given, The question is AM = 2700 and HM = 75, then find GM ?
*Saturday, June 15, 2013 at 1:17pm*

**maths**

find the 20th term of an arithmetic progression whose 6th term is 3 and 14th term is 19
*Wednesday, June 12, 2013 at 4:18am*

**maths**

find the 20th term of an arithmetic progression whose 6th term is 3 and 14th term is 19
*Wednesday, June 12, 2013 at 4:16am*

**Math**

1. One of the formulas for finding the partial sum of an arithmetic sequence is Sn = n(a1 + an) True 2. The value of a probability must be in the interval [0, 1]? True
*Friday, June 7, 2013 at 3:13pm*

**Math**

1. Find the sum of the first 21 terms of the arithmetic sequence given by the formula an = n+5 I see that I have to plug in numbers and get the terms...but i'm sure there's a shorter way to do this instead of plugging in 21 numbers. 2. The following infinite geometric ...
*Friday, June 7, 2013 at 11:24am*

**Math**

In a right triangle, there is arithmetic sequence. If the shortest side is 15 cm long, what is te length of the other 2 sides. ( hint use pytageron Therom)
*Tuesday, June 4, 2013 at 9:44am*

**Math**

In a right triangle, there is arithmetic sequence. If the shortest side is 15 cm long, what is te length of the other 2 sides. ( hint use pytageron Therom)
*Tuesday, June 4, 2013 at 9:43am*

**math**

The lower leg of a right triangle is 8 cm in length. Calculate the other two knowing that the sides of the triangle form an arithmetic sequence. please give me step by step answers thanks
*Monday, June 3, 2013 at 4:22pm*

**Math question**

In an arithmetic series, the 15th term is 43 and the sum of the first 15 terms is 120. Add the first 20 terms of the series.
*Sunday, June 2, 2013 at 7:41pm*

**arithmetic**

Assume you roll a fair dice twice. Two rolls are independent and identically distributed, with probability of rolling a particular number being 1/6. So, for instance, the probability of rolling 5 and then 2 is P(5,2) = P(5) ⋅ P(2) = 1/6 ⋅ 1/6 = 1/36 Consider a ...
*Saturday, June 1, 2013 at 8:17pm*

**arithmetic**

Assume you have an unfair coin - the one that lands heads with probability P (not known beforehand). You have rolled such a coin 20 times and got 16 heads and 4 tails. What is the best estimator of P, Pˆ? (Hint: it is the one based on sample mean.)
*Saturday, June 1, 2013 at 8:16pm*

**arithmetic**

Assume you roll a fair dice twice. Two rolls are independent and identically distributed, with probability of rolling a particular number being 1/6. So, for instance, the probability of rolling 5 and then 2 is P(5,2) = P(5) ⋅ P(2) = 1/6 ⋅ 1/6 = 1/36 Consider a ...
*Saturday, June 1, 2013 at 8:15pm*

**How to get quick responses to your math questions**

Math is a wide subject, ranging from K to 11, college and university. Then there is algebra, trigonometry, geometry, arithmetic, calculus, number theory, ... etc. Not all teachers answer all math questions (many do). If you would give a little more detail on which branch of ...
*Saturday, May 25, 2013 at 9:45am*

**Algebra**

80. Determine the sum for the arithmetic series: n = 37, t1 = 23, t37 = 203 a. 5631 b. 8362 c. 6742 d. 4181 81. Determine the sum for the arithmetic series: n = 100, t1 = 17, t100 = 215 a. 9900 b. 3350 c. 11,600 d. 990 82. Determine the sum for the geometric series: n=10, r=-2...
*Tuesday, May 21, 2013 at 1:38pm*

**Math**

Please help. 51. Solve: 125=(x3)/0.3^-3 a.7 b.14 c.15 d.9 53. 49x-2 = 7Ö 7 a.-5/4 b.5/4 c.11/4 d.-11/4 60. Simplify: 2log^3 6 - log^3 4 a.3 b.6 c.4 d.2 61. Solve the equation: logb (x^2 + 7) = 2/3logb 64 a.9 b.3 c. √23 d. ±3 62. Solve: (The fifth root of x) ...
*Tuesday, May 21, 2013 at 1:29pm*

**algebra**

is this a arithmetic, or geometric sequence -96,-48,-24,-12,......
*Wednesday, May 15, 2013 at 1:16pm*

**arithmetic**

there are n arithmetic means between 5 and 32 such that the ratio between the 3rd and 7th means is 7:13,find the value of n.
*Tuesday, May 14, 2013 at 1:45pm*

**TRIG**

in an arithmetic sequence a1=4 and d=8 which term is 428 Show your work
*Saturday, May 11, 2013 at 8:32pm*

**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*

**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*

**arithmetic**

james used the rule add 2 to create a sequence.the he used the rule add 12 to create a second sequence.what are the first five terms in each sequence james created?<3
*Tuesday, May 7, 2013 at 3:27pm*

**Social Studies**

I need a 4 paragraph essay on the devil's arithmetic. my theme is "no laugh, no hope. NO hope, no life." THANK YOU (: im not passing and i reallllllly neeed help on this
*Monday, May 6, 2013 at 9:33am*

**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...
*Sunday, April 28, 2013 at 4:20pm*

**maths**

find a6 for an arithmetic sequence where a1=3x+1 and d=2x+6. 2.A display of cans on a grocery shelf consists of 20 cans on the botton, 18 cans inthe next row, and so on in an arithmic sequence, until the to[p row has four cans. how many cans , in total, are in the display?
*Sunday, April 28, 2013 at 2:36am*

**math**

if 1,x,y is a geometric sequence and x,y,3 is an arithmetic sequence, compute the maximum value of x+y
*Saturday, April 27, 2013 at 10:25am*

**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. ...
*Thursday, April 25, 2013 at 7:52pm*

**arithmetic**

a flower floats on the surface of lake water. its level above the lake surface is 5.5 cm. then a sudden gust of wind comes and flower sinks 10 cm far from its original point, what is the depth of lake at the point where the flower was floating
*Friday, April 19, 2013 at 11:02pm*

**arithmetic mean**

what is the average of 88 94 98 84
*Thursday, April 18, 2013 at 8:37am*

**HELP!!! Math**

You visit the Grand Canyon and drop a penny off the edge of a cliff. The distance the penny will fall is 16 feet the first second, 48 feet the next second, 80 feet the third second, and so on in an arithmetic sequence. What is the total distance the object fall in 6 seconds?
*Tuesday, April 16, 2013 at 11:34pm*

**Please Help!! Math**

A display of cans on a grocery shelf consists of 20 cans on the bottom, 18 cans in the next row, and so on in an arithmetic sequence, until the top row has 4 cans. How many cans, in total, are in the display?
*Tuesday, April 16, 2013 at 11:29pm*

**please help me please!!! Math**

Find a6 for an arithmetic sequence where a1=3x+1 and d=2x+6 . I can't even solve it because I do not have any idea.
*Tuesday, April 16, 2013 at 11:23pm*

**arithmetic**

If the first term of an arithmetic sequence is 2 and the 7th term is 3278, what is the common difference?
*Tuesday, April 16, 2013 at 10:29pm*

**math**

An arithmetic sequence is represented in the following table. Enter the missing term of the sequence. 10,-2,-14,-26,?...
*Tuesday, April 16, 2013 at 6:53pm*

**arithmetic**

play 160 games and won 60% how many games did the team win
*Sunday, April 14, 2013 at 5:09pm*

**arithmetic**

which of the following is the leas0. 0.015 0.105 or 0.15
*Sunday, April 14, 2013 at 4:56pm*

**arithmetic**

which of the following is the least
*Sunday, April 14, 2013 at 3:39pm*

**algebra**

Select the first five terms in the arithmetic sequence an = 6n, starting with n = 1.
*Saturday, April 13, 2013 at 9:25pm*

**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...
*Thursday, April 11, 2013 at 4:46pm*

**MATHs**

The three terms x+12, 3x+5 and 2x+25 are the first three terms of an arithmetic progression. What is the value of x?
*Friday, April 5, 2013 at 8:35pm*

**math**

The three terms x+12, 3x+5 and 2x+25 are the first three terms of an arithmetic progression. What is the value of x?
*Friday, April 5, 2013 at 7:47am*

**Algebra 2**

The simple formula for the nth term of an arithmetic sequence is an = 4n + 16. What is the explicit formula corresponding to the simple formula?
*Thursday, April 4, 2013 at 6:53pm*

**Algebra**

The simple formula for the nth term of an arithmetic sequence is an = 4n + 16. What is the explicit formula corresponding to the simple formula?
*Thursday, April 4, 2013 at 6:37pm*

**Algebra please**

I have two left I need help with and dont understand. Find the partial sum S6 1. An=3n+2 2. Find the number of terms n in an arithmetic sequence if a1=20, d=5, and An=75.
*Wednesday, April 3, 2013 at 10:36pm*

**Algebra **

I have 3 questions I'm stuck on and would love for someone to explain and show me how to solve them so I can also solve the other one. Find the partial sum S6 1. An=3n+2 2. Find the number of terms n in an arithmetic sequence if a1=20, d=5, and An=75. 3. Find the general ...
*Wednesday, April 3, 2013 at 9:42pm*

**Algebra 3**

find the sum of each finite arithmetic series 8+9+10+...+15
*Wednesday, April 3, 2013 at 7:49pm*

**arithmetic**

what is 6.3x100
*Wednesday, April 3, 2013 at 6:02pm*

**Algebra **

I have a few problems I need some help with. The first is Evaluate the sum. 1. There is an E like symbol on the top is 10 on the bottom n=1 and to the right (7-2n) 2. The next question is find a10 for an arithmetic sequence with a1=6 and d=10 3. Find the number of terms in the...
*Wednesday, April 3, 2013 at 3:20pm*

**Math(arithmetic & Geometric Series) **

1)The sum of 6 terms of an arithmetic series is 45, the sum of 12 terms is -8. Find the first term and the common difference? 2)If in a geometric sequence the sum of the second and the third is 20 and the sum of the fourth and fifth is 320, find the common ratio and the first ...
*Saturday, March 23, 2013 at 7:38pm*

**arithmetic**

10.7 div by 315.00=
*Saturday, March 23, 2013 at 2:27pm*

**algebra 2\arithmetic series**

on the moon ,afalling object falls jest 2.65feet in the first second afther
*Saturday, March 23, 2013 at 2:24pm*

**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*

**maths**

What is the smallest positive common difference of a 6-term arithmetic progression consisting entirely of (positive) prime numbers?
*Thursday, March 21, 2013 at 6:44am*

**maths**

How many integers appear in both of the following arithmetic progressions: A1:2,9,16,……,2+(1000−1)×7 A2:3,12,…,21,…,3+(1000−1)×9 Details and assumptions Since 2 appears in A1 but not in A2, it does not appear in both of...
*Thursday, March 21, 2013 at 6:37am*

**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*

**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...
*Tuesday, March 19, 2013 at 10:41am*

**Arithmetic**

A box in a college bookstore contains books, and each book in the box is a history book, an English book or a science book. If one-third of these books are history books and one-sixth are English books, what fraction of the books are science books? A. 1/3 B. 1/2 C. 2/3 D. 3/4...
*Tuesday, March 19, 2013 at 10:24am*

**Arithmetic**

A box in a college bookstore contains books, and each book in the box is a history book, an English book or a science book. If one-third of these books are history books and one-sixth are English books, what fraction of the books are science books?
*Tuesday, March 19, 2013 at 10:23am*

**arithmetic **

The measure of two angles of a triangle are 35* and 45*. What is the measure of the third angle of the triangle? A. 95* B. 100* C. 105 D. 110*
*Tuesday, March 19, 2013 at 10:15am*

**7th Grade Math**

What is arithmetic and geometric sequences?
*Monday, March 18, 2013 at 12:43pm*

**number theoRY!!!**

How many integers appear in both of the following arithmetic progressions: A1: 2, 9, 16,.....2+(1000-1)*7 A2: 3, 12, 21,.....3+(1000-1)*9 Since 2 appears in A1 but not in A2, it does not appear in both of the arithmetic progressions.
*Monday, March 18, 2013 at 3:11am*

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