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Arithmetic

Math
The third term of an arithmetic sequence is -12 and the seventh term is 8.what is the sum of the first 10 terms?

Math
How do we find the sum of n terms of the following? Tr= 5^r/[(r+1)(r+2)] I can see there's an arithmetic progression and a geometric progression? How do we combine them both to find n terms.

math
If the second term of an arithmetic sequence is -2 and the fourth term is 6, find the seventh term

Math
Four number have an arithmetic mean of 6 if fifth number is added to set the mean rises to 8 what is number added?

Maths
b.Find the seventeenth term of an Arithmetic Progression, whose 9th and 15th term are 19 and 37 respectively.

Math
Arithmetic sequences Find a8 and an for the sequence: -3, -7,-11

Algebra 2
Find the sum of the following arithmetic series. 13+11+9+...+(-25) Someone help please. Thanks

Arithmetic
32 is 40% of what number? I am brushing up on math that I haven't done in years. Could someone please explain this step-by-step to remind me how to do this kind of problem properly? Thank you!

Math
Write a rule for the nth term of the arithmetic sequence. -12, -5, 2, 9

Math
Arithmetic sequence: For a8 and an for the sequence: -3,-7,-11 My answer a8=33

Math
In a particular arithmetic progression, the sum of the first 10 terms is equal to the sum of the first twenty terms. Show that the sum of the first 30 terms is equal to 0.

Maths
The second term of arithmetic progression is 15 and the fifth term is 21 find the common difference with solutions

Algebra 2 check my last answer?!
A supermarket finds that the number of boxes of a new cereal sold increases each week. In the first week, only 16 boxes of the cereal were sold. In the next week, 33 boxes of the cereal were sold and in the third week 50 boxes of the cereal were sold. The number of boxes of ...

math!!
Three numbers are in an arithmetic progression; three other numbers are in a ge- ometric progression. Adding the corresponding terms of these two progressions yields 32, 26, and 32. The sum of the three terms of the arithmetic progression is 51. Find the terms of both ...

GGHSS COTTON HILL Maths
consider the arithmetic sequence 53,47,41 than what is the common difference and the algebraic expession of the given sequence

math
if the sixth term of an arithmetic progression is 37 and sum of the first six term is 147

arithmatic series
Could someone show me the difference between arithmetic sequence and series

math
What are the first three terms of an arithmetic series in which a1 =9,an=105, and Sn=741?

math
Find the four terms between 15 and 87 in the arithmetic sequence

math
Write an equation for the nth term of the arithmetic sequence -13,-8,-3,2........

Advanced maths
What are the first three terms of an arithmetic series in which a1=9,an=105,and Sn=741?

Advance maths
Find the four terms between 15 and 87 in the arithmetic sequence.

Computer program and design
Design a class called SimpleCalculator using psudoecode that contains public methods named add(), subtract(). Each of the methods accepts two numeric arguments and returns a number that represents the result of the appropriate arithmetic operation. Design a sub-class of ...

Math
Write three arithmetic sequences with 30 as the sum of the first five terms

algebra
The sum of the three numbers in Arithmetic Progression is 33. If the numbers are increased by 2, 1, and 6 respectively the new numbers will be in Geometric progression. Find these numbers.

programming
Design a sub-class of SimpleCalculator called Calculator using psudoecode that contains public methods named multiply(), and divide() and that defines private fields called num1 and num2. Each of the methods accepts two numeric arguments and returns a number that represents ...

programming
Design a sub-class of SimpleCalculator called Calculator using psudoecode that contains public methods named multiply(), and divide() and that defines private fields called num1 and num2. Each of the methods accepts two numeric arguments and returns a number that represents ...

programming
Design a class called SimpleCalculator using psudoecode that contains public methods named add(), subtract(). Each of the methods accepts two numeric arguments and returns a number that represents the result of the appropriate arithmetic operation

Program Design and Development
Design a class called SimpleCalculator using psudoecode that contains public methods named add(), subtract(). Each of the methods accepts two numeric arguments and returns a number that represents the result of the appropriate arithmetic operation. Design a sub-class of ...

Trigonometry
The first three terms of an arithmetic progression are 1/2, x, 25. The first three terms of a geometric progression are x+1/4, 32 1/2, and y, where x and y are positive numbers. Find the value of X and the value of Y.

Business statistics
If the arithmetic mean of two numbers is 15 and their geometric mean is 9 find the two numbers

math
two arithmetic progression are such that the common difference of both is 8.if the difference b/w their 50th terms is 50.what will be the difference b/w their 80th terms?

Math
1.Suppose that the function f(x) = 5x + 3 represents the number of cars that drive by in x minutes. How many cars will drive by in 10 minutes? a. 80 b. 53 c. 50 d. 35 2. Buses on your route runs every 8 minutes from 7:00am to 11:00am. You arrive at the bus stop at 8:19am. How ...

arithmetic
S8:S4=97:81 find the common ratio

maths
if the arithmetic mean of four numbers is 20 and the arithmetic mean of other six numbers is 10 then,find the arithmetic mean of all the numbers taken as one group

consumer math
Adam has created a register for the bank account he opened on April 16th. Unfortunately, Adam has made a mistake and cannot figure out where he went wrong. Use the transaction descriptions below to determine where his error is. The account was opened on April 16 with a tax ...

math - consumer arithmetic
Joe and Wendy bought a house costing $210000. They paid a 35% deposit and borrowed the remainder at a flat interest rate of 7.75% p.a. payable over 25 years. What is the amount of their total monthly instalment?

math
calculate the first ten term of an Arithmetic progression whose 5th term is 24 and the difference the 7th and 10th term is 15

Series
One sequence of alternating terms of the series 1+2+3+4+5+8+... forms an arithmetic progression, while the other sequence of alternating terms forms a geometric progression. Sum the first 10 terms of each progression and hence find the sum of the first 20 terms of the series.

Series
Given that 1/(y-x), 1/2y, and 1/y-z are consecutive terms of an arithmetic progression, prove that x,y, and z are consecutive terms of a geometric progression.

Math, Series
Given that 1/(y-x), 1/2y, and 1/y-z are consecutive terms of an arithmetic progression, prove that x,y, and z are consecutive terms of a geometric progression.

math 1
c) 36,31,25,21,... t7 and t20 arithmetic and geo metric

Mathematics
The eighth term of an arithmetic series is twice the third term. The sum of the first eight terms are 39.Calculate the first term. Please help i've been stuck for hours on this question

Maths
The eighth term of an arithmetic series is twice the third term. The sum of the first eight terms are 39.Calculate the first term. Please help

geometry
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A(n)=-2+(n-1)(-2.2)

Math
4. Identify the sequence 1,024, 64, 4, 1/4,... as arithmetic, geometric, neither, or both,

math
Find the arithmetic sequence whose fifth term = 21, and the tenth term = 3 times the second term

math
I was just wondering, what is the difference between an arithmetic sequence and a geometric sequence?

Math,science
The 5th term of an arithmetic progression is 23 and the 12th term is 37.find the third term and common different

Math
An arithmetic sequence has a first term of 0 and a 10th term of 15. If 10 is an output of the sequence, which term number is it? Show and explain how you know you have the correct answer.

Math - Sequences
Could someone help me with this question?? What are the first four terms of an arithmetic sequence if the common difference is 1.5 and the first term is 15? A. 15, 30, 45, 60 B. 15, 16.5, 18, 19.5 C. 15, 22.5, 33.75, 50.625 D. None of the above

Maths
An arithmetic progression start 3+2a, 3+4a,3+6a if the fifth term is 73 work out value a?

Algebra
Find the sum of 35 terms of an arithmetic series of which the first term is "a" and the fifteenth term is "9a."

Algebra
If the first and the last terms of an arithmetic series are 10 and 62, show that the sum of the series varies directly as the number of terms

mental arithmetic pls help( ASAP)
Katie went on holiday on 29 July and returned on 7 August .For how many days was she on holiday?

mental arithmetic pls help( ASAP)
50% of a sum of money was £7.00. Find the whole sum of money.

mental arithmetic
The three angles of a triangle each measure 60 degrees. Describe the triangle according to a)its angles b)its sides thank you if you help :D :)

Maths
In the arithmetic sequence 5;7;10;13 which term is greater than 150

Math
Find 2 numbers whose arithmetic mean exceeds their geometric mean by 2and whose harmonic mean is 1/5 of the larger number

Algebra 2
The sum of four numbers in arithmetic progression is 16. The square of the last number is the square of the first number plus 48. What are the four numbers?

math
in an arithmetic sequence 17th term is 9 times the first three terms and the 9th term is 6 less than 3 times the 1st term. Find the first three terms

math
Three numbers form a geometric progression. If the second term is increased by 2, then the progression will become arithmetic and if, after this, the last term is increased by 9, then the progression will again become geometric. Find these three numbers.

math
The sum of the first 9 terms of an arithmetic series is 144, and the sum of the first 14 terms is 329. Find the first 4 terms of the series.

math
find the sum of each arithmetic series (a)5+8+11+....to 20 terms

math
p;2p+2;5p+3 arithmetic sequence determine the next three terms

maths
The fith term of an arithmetic sequence is 23 and the 21th term is 72 Determine the first three terms of the sequence and the nth term

Math
If the 15th and 16th term of an arithmetic sequence are 99 and 92 respectively then the 5th term is? Studying for math final and I cannot figure this out

9th grade algebra (sequences)
Can you check my homework please? Given the following representations, tell whether it's arithmetic/geometric, find the difference/ratio, find the explicit formula, find the recursive formula, and the given term. (This whole question was in the form of a table) 1. -6, 12, 24...

mental arithmetic
7/20 of £2.00 equals how many pennies? 16 2/3 equal ?/3 19min plus ?hours plus ?min equals 3hours thank u to all who help :D

maths
Determine the 10th and 21st terms of each of the arithmetic sequences: 4+7x; 5+9x; 6+ 11x.......

mathematics
the first four terms of an arithmetic sequence are -1; x ; 3 ; x+8 find the value(s) of x I did the question I can find the values of x

mathematics
the first four terms of an arithmetic sequence are -1

Maths
The third term of an arithmetic profession is 90 and the eleventh is 50.. what is the common difference?

Arithmetic progression
In a class test some of the answers obtained by Neha in mathematics and science is 28 had she got 3 more in maths is 4 marks class in Science the product of marks in obtained in 2 subjects would have been 180. find the marks obtained is 2 subjects separately. if you found your...

9th grade algebra (recursive formula)
Can you explain how to find a sub 1 in the following problem? 1. Given 2 terms in an arithmetic sequence, find the recursive formula. a sub 18 = 3362 , a sub 38 = 7362 Steps: a. Find difference: (7632 - 3362)/(38 - 18) = 4000/20 = 200 b. plug into recursive formula: a sub n = ...

plz sequence sir steve reiny bob damon i need u
The three real,distint and non-zero numbers a,b,c are such that a,b,c are in arithmetic progression and a,c,b are in geometric progression. Find the numerical value of the common ratio of the geometric progression.. Hence,find an expression in terms of a for the sum to ...

math
What is the fifth term in the arithmetic sequence defined by the explicit formula an=6n−4? Enter your answer in the box. a5=

Maths
The first 5 terms of an arithmetic sequence are: 7 13 19 25 31 Prove that the difference between the squares of any two terms of the sequence is always a multiple of 24 Nth term = ? Nth term squared = ? Mth term = ? Mth term squared = ? Difference = ? ? = _(______) This is a ...

math
the fifth term of an arithmetic progression is 19,and the fourteenth term is 55. Find its first term

math C2 sequences and series
The eight,fourth and second terms of an arithmetic progression form the first three terms of a geometric series. The arithmetic progression has first term A and common difference d, and the geometric progression has first term G and common ratio r. a)Given that d is not equal ...

Algebra
The sum of n tearm of two arithmetic progressions are in the ratio (7n+1):(4n+27).Find the ratio of their 11th terms

Maths
If the angles of triangle ABC are in increasing order and in an arithmetic progression then find sinB

a.p.
find the sum of n arithmetic means between x and 3x

a.p.
find the sum of n arithmetic means between x and 3x. (answer 2nx)

h.p.
the arithmetic mean of two numbers exceeds the geometric mean by 3/2 and geometric mean excceeds the harmonic mean by 6/5. find the numbers.

duet
if a.b.c.d are four consecutive terms of an arithmetic progression then show that a^2 -d^2=3(b^2 - c^2)

math
an arithmetic series is such that the ninth term is zero and the sum of first 25 terms is 50.the first term of the series?

Maths
The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

Maths
The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

Arithmetic progression
A person buys national savings certificate of values exceeing of the last years purchase by Rs. 100. after 12years he finds that the total value of certificate purchased by him is Rs. 7,200 find the value of the certificate purchased by him (1) in the first year and (2) in the...

Maths
The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

Algebra 2
What is the sum of the arithmetic series 5 (sigma sign) n-1 (3n-2)?

additional mathematics
if the 2nd term and the 4th term of an arithmetic progression are 15 and 23 respectively, find the first term and the common difference

object oriented programming
Let’s consider there will be 5 delicious food available at your new restaurant which will open by the end of 2016. To make the cashier's job easier, build a C++ console application to automate the process of billing on a daily basis. Specifically, the billing system must...

math
An arithmetic series is such that the 10th term is 40 and the sum of the first 10 terms is 265. Find the sum of the first 20 terms.

Math
The sums of n terms of two arithmetic series are in ratio of 2n+1:2n-1. Find the ratio of their 10th terms.

Mathematics
if 8; 2x; 2y form an arithmetic sequence and 2x; 2y; 36 form a geometric sequence determine the values of x and y I feel like I am going around in circles on this problem. For the AP i have the following formulas: (1) d=(2y-8)/2 (2) d=2x-8 (3.1) (2y-8)/2=2x-8 or (3.2) (2y-8)/2...

Arithmetic
If pencils are bought at 70 cents per dozen and sold at 3 for 20 cents, the total profit on 6 dozen is?

Arithmetic
a folding chair regularly sells for $29.50. how much money is saved if the chair is bought at a 20% discount?

math
12, −9, 6, −3, .. whats the arithmetic function?

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