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September 20, 2014

Homework Help: Math: Arithmetic

Recent Homework Questions About Arithmetic

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Math
Tell whether each sequence is arithmetic. Justify your answer. If the sequence is arithmetic, write a function rule to represent it. 15. 128, 64, 32, 16... 16. 3, 3.25, 3.5, 3.75..
Wednesday, January 8, 2014 at 10:48pm

math
A friend opens a savings account by depositing $1000. He deposits an additional $75 into the account each month. a. What is a rule that represents the amount of money in the account as an arithmetic sequence? b. How much money is in the account after 18 months? Show your work.
Wednesday, January 8, 2014 at 10:23pm

math
A friend opens a savings account by depositing $1000. He deposits an additional $75 into the account each month. a. What is a rule that represents the amount of money in the account as an arithmetic sequence? b. How much money is in the account after 18 months? Show your work.
Wednesday, January 8, 2014 at 10:23pm

Math
A friend opens a savings account by depositing $1000. He deposits an additional $75 into the account each month. a. What is a rule that represents the amount of money in the account as an arithmetic sequence? b. How much money is in the account after 18 months? Show your work.
Wednesday, January 8, 2014 at 10:08pm

math
i need help on properties of arithmetic
Wednesday, January 8, 2014 at 4:24pm

algebra
the third term of an arithmetic sequence is 14 and the ninth term is -1. Find the first four terms of the sequence
Tuesday, December 17, 2013 at 10:34am

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)&​times;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

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