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Homework Help: Math: Arithmetic
Recent Homework Questions About Arithmetic
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math- Algebra 2
An auditorium has 49 rows of seats. The first row contains 40 seats. As you move to the rear of the auditorium, each row has 3 more seats than the previous row. * I am pretty sure it involves both arithmetic series and explicit formulas but im not sure exactly how to go about it
math
For an arithmetic sequence, a_{19} = 78. If the common difference is -3, find a_1 = (i found it to be 132) the sum of the first 57 terms =?? -I know there is a formula but i cant think of what it is
math
-Write the arithmetic sequence 21,13,5,-3... in the standard form: a_n= -a_n=a_1+(n-1)d--so a_n=21+(n-1)-8 *a_n=-168-8n why isnt this right?
5th grade math
what is geometric secuence? what is arithmetic secuence?
arithmetic
I have a Q that im trying to solve: it says: the 1st , 2nd, and 3rd term of a geo. sequence is the same as the 1st, 7th and 9th terms of an arith. sequence.: I have to find the common ratio. So i know: a+8d = a(r^2) (1) a+6d = ar (2) but i don't know how to solve this simu...
arithmetic
5/8 divided by (-6 2/3)=
arithmetic
0.22 divided by 7.02
arithmetic
4th &7th term is 20 & 32 , find a ,d & nth
arithmetic
2.75+.003+.158=
arithmetic
Find the smallest positive integer P such that the cube root of 400 times P is an integer.
arithmetic
Steve's mom's age is 7 years less than 3 times Steve's age. The sum of their ages is 65 years. Find their ages.
advanced math
suppose that a1, a2, a3, ..., ak forms an arithmetic sequence. If a5+a8+a11=10, a7+a10+a13=12, and ak=11, find k note: the numbers and the k after the a's are subscript but i don't know how to type that
arithmetic
14/64 divided by 1/2
arithmetic
nth term expressions whose 8th term is 74
arithmetic
man bought portable radios for 600.00. Sold 720 and made 15.00 profit per radio. How many did he buy?
arithmetic
what is the mean, median and mode also range of stem and leaf Plots?
math
the digits of a certain number of 3 arithmetical digits are in arithmetical progression.Their sum is 15.And the number is 129 times the first digit.What is the number??? by using the formula.. please...
Arithmetics
What will my peercentage saving be if I buy something in a sale that offers 3 for the price of 2?
arithmetic
I know that this question had already been answered. But still I could not understand. Calculate this question and write the answer in standard form.The answer should come 5*10. (4.5*10^12)divided by (9*10^10)
arithmetic
calculate this question and write each answer in standard form. (4.5*10^12)dvided by(9*10^10)
math
the digits of a certain number of 3 arithmetical digits are in arithmetical progression.Their sum is 15.And the number is 129 times the first digit.What is the number??? answer it please.. thank you..
math
the digits of a certain number of 3 arithmetical digits are in arithmetical progression.Their sum is 15.And the number is 129 times the first digit.What is the number??? answer it please.. thanks you..
math
the digits of a certain number of 3 arithmetical progression.Their sum is 15 and the number is 129 times its first digit.What is the number?
Intro to Psychiology 1
Basic arithmetic is not an easy task for Jeanne. In fact, she has to work hard at understanding mathematical concepts. She finds it hard to believe that basic math skills are: A) Present in all species B) A natural inclination, because they relate to language C) Present in all...
math
divide 100 loaves of bread amoung 5 men so that the amounts are in arithmetic progression ( increase by the same amount each time) and the sum of the three largest shares is seven times the sum of the two smallest.
arithmetic
the average weight of 20 women is 130 pounds. if the average weight for 3/4 of these women was 140 pounds, what was the average weight, in pounds, for th rest of the women?
math
Can you find the 11th term of the arithmetic sequence: 5, 12, 19, 26.
English
How do you create a memorial for the Jewish victims of the Holocaust based on the book "The Devils Arithmetic"?
Investing
suppose the real risk - free is 3.50% and the future rate of inflation is expected to be constant at 6.80% . What rate of return would you expect on a 1 yr Treasury security , assuming the pure expectations theory is valid? Disregard cross- product terms, i.e., if averaging is...
Investing
suppose the real risk - free is 3.50% and the future rate of inflation is expected to be constant at 6.80% . What rateof return would you expect on a 1 yr Treasury security , assuming the pure expectations theory is valid? Disregard cross- product terms, i.e., if averaging is ...
Math
10, 12, 22, 32, 42,... I say that this sequence is not geometric or arithmetic. Is this right?
Data Analysis Help
Arithmetic operations, cell references, and __________ can be used in Excel formulas. constants macros programs procedures is it A 2Using the mouse to select a specific cell is when creating a formula is called: sizing. moving. accessing. pointing. is it D 3.To ensure that the...
Algebra
In an arithmetic series, the terms of the series are equally spread out. For example, in 1 + 5 + 9 + 13 + 17, consecutive terms are 4 apart. If the first term in an arithmetic series is 3,the last term is 136, and the sum is 1,390, what are the first 3 terms?
arithmetic
How do you find the sum number of an arithmetic sequence? I forgot and my textbook does not explain it well.
trig
It's in sigma notation, so I'm not sure how to type it. I'll just use E lol. Find each sum. 6 E (n+1)/(n+2) n=1 Is this a geometric or arithmetic series? That is pretty much all I really need to know. I appreciate all the help you guys give.
trigonometry
Find the number of cans stacked in a display if there are 30 rows of cans with six on the top row, ten on the second row, 14 on the third row and so on. I know it's the sum of an arithmetic sequence, but I'm not sure exactly what to do.
Arithmetic
Hi, i'm preparing for Olevels and i have some maths questions that i'm not sure how to do, i'd appreciate it if you could help. 1. The numbers 60 and 126, written as products of their prime factors: 60=2^2x3x5 126=2x3^2x7 a)Find the largest integer which is a facto...
arithmetic
Help me understand Decimals place value
math
Indicate whether the sequence is arithmetic, geometric, or neither. 6, 30, 150, 750, 3750, . . .
Math (Algebra/Pre-Algebra)
What is the 23rd term in the arithmetic sequence: 11, 14, 17, 20...? All I need is the formula to find the it because I have to show work. Thanks.
algebra 1
I'm doing a powerpoint for math, and one of the word problems involve arithmetic sequences. Can someone just type the "a sub n" and "a sub 1" "a sub 7" so that I can copy and paste onto my powerpoint? Or can you sow me how to find it? Thanks!
Math
I have no idea how to understand quantitative comparison questions which involves the understanding of arithmetic mean. I need to understand the question first to do the problem, please explain. Thank you
arithmetic
If a person smokes 20 cigarettes in a day for 58 years of their life, how many cigarettes do they smoke? If each cigarette reduces a person's life by 5 minutes, by how many days is a person's life reduced if they smoke 20 cigarettes a day for 58years of their life? Ple...
algebra
I need help!!! 3/2,1/2, 1/6,1/8,... I need to determine if this sequence is arithmetic, geometric, or neither, then I need to find the ninth term
algebra
I need help!!! 3/2,1/2, 1/6,1/8,... I need to determine if this sequence is arithmetic, geometric, or neither, then I need to find the ninth term
ALGEBRA
USE SUMMATION NOTATION TO WRITE A ARITHMETIC SERIES FOR THESE TERMS. PLEASE SHOW HOW TO DO IT. 15+25+35+...; N=7 4+8+12+...; N=4 3+7+11+...;N=8
ALGEBRA
USE SUMMATION NOTATION TO WRITE A ARITHMETIC SERIES FOR THE FOLLOWING MUMBER OF TERMS. 10+7+4+...;N=6
Advanced Functions
I need help answering these questions 1. State the Common Ratio of the following Geometric sequence 3/4 , 3/10 , 3/25 , 6/125 2. In the Arithmetic Sequence below, X = ___ 100 , ___ , _X_ , 64 3. For the Geometric Sequence below, X = ___ _X_ , 48 , ___ , ___ , 6 4. Given the se...
math
1. Use the given arithmetic sequence to answer the following problems. Arithmetic sequence: 10, 15, 20, 25, 30, …. a. Use the formula to find the 75th Term of the given Arithmetic Sequence I. Formula: II. Work: b. Use the formula to find the nth Term of the given Arithmet...
arithmetic
83.6/4
Pre Calc
For what values of t will t-2, 2t-6, and 4t-8, in this order, form an arithmetic sequence? Could someone at least start me off?
math, adult education
If I take 0 out of arithmetic then what do I have left mathematically? What is the name for the mathematics that does not have zero in it? Is this mathematics used in the real world?
math (unanswered, previously posted)
A set of telephone lines is to be installed so as to connect between town A and town B. The town A has 2000 telephones. If each of the telephone users of A were to be guaranteed instant access to make calls to B, 2000 telephone lines would be needed. This would be rather extra...
Statistics
A set of telephone lines is to be installed so as to connect between town A and town B. The town A has 2000 telephones. If each of the telephone users of A were to be guaranteed instant access to make calls to B, 2000 telephone lines would be needed. This would be rather extra...
math
suppose an arithmetic sequence and a geometric sequence with common ration r have the same first two terms. show that the third term of the geometric series is r^2/(2r-1) tomes the third term of the arithmetic sequence
arithmetic
the product of 8 and a number is 56, What is 2 less than the number?
arithmetic
What does 2/3 + 5/6 equal?
arithmetic
9+4*5-25/8-4/2+2
arithmetic math
For each of the following expressions, show each step a student would folow to mentally perform the calculations in the whole numbers. For each step, identify the law, definition , axiom ec that was used to roduce that step. 345+641+255+359
arithmetic
What is the answer of a subtraction sentence called?
arithmetic
50divied483
Math
"How many different equivalent expressions for a particular number can be found?" Various constraints can be (and need to be) applied, such as the use of integers only, the number of expressions listed, a restricted choice of digits, or operations etc. List ten mathe...
arithmetic
n=(3/5)2N=
Math-Gr.11 urgent
The 10th term of an arithmetic series is 34, and the sum of the first 20 terms is 710. Determine the 25th term. Can someone please explain how to do this? I don't know which formula to use. TIA
arithmetic
In 2002 there were more than 30,000 McDonald’s restaurants in the world. Of these, approximately 14,000 were in the United States. In Great Britain there were 1,116 McDonald’s franchises. The following data are taken from those 1,116 McDonald’s. Total employees:...
arithmetic
What are the multiples of 3
math
the arithmetic mean of a set of nine numbers is 5. when one more number is added to the set, the new mean is 5.5. What number was added?
Arithmetic
How can we put parentheses around the following expression so that the answer is 105? 9 + 8 x 7 - 6 x 5 + 4 x 3 + 2
maths- arithmetic
The average weight for a group of 20 women is 130 pounds.If the average weight for 3/4 of these women was 140 pounds,what was the average weight,in pounds,for the rest of thee women?
arithmetic
please,can you help me with this? f(x)=x-1/2 g(x)=x+2/3
algebra 2
The average (arithmetic mean) of the test scores of class of a class of x students is 74, and the average of the test scores of a class of y students is 88. When the scores of both classes are combined, the average is 76. What is value of x/y?
arithmetic
I'm an old lady going back to school and need HELP. Simplify: 5/8 + 2 1/3 x 3 1/4= (five eighths plus two and one third times three and one fourth)
arithmetic
A special set of rules, called the ------------blank, can be used to solve expressions with more than one operation.
arithmetic
What is 67 5/8 x 6?
GK or Dr.Bob222...Chemistry please help...
Please refer to the previous post Chemistry Help Please. Moles of S203^2- = (molarity)(volume): =(0.032400 mol/L)(0.053 litres S203^2-) = 0.03240 moles S203^2- Posted by DrBob222 on Wednesday, October 22, 2008 at 9:37pm in response to GK..please check...Chemistry Help Please I...
arithmetic
How do I get hours to perform task I have a rate of 28 per hour and 6245 transactions how many hours to complete
arithmetic
ami is 8 years older than her sisiter,ceanne. in four years ami will be twice as old as ceanne. what is the sum of their ages now?
math
what are the similarities and differences between an arithmetic sequence and a linear equation? ok i know that arithmetic sequence is a sequence of real numbers for which each term is the previous term plus a constant (called the common difference). For example, starting with ...
math
The average (arithmetic mean) of 4 numbers is greater than 7 and less than 11. What is one possible number that could be the sum of these 4 numbers?
arithmetic
here is a question for you or a problem (math) 6.5(1 . 10 is the answer 65.0 ?
Algebra
A = - 113 and A = -213 20 40 this is an arithmetic sequence and i have to find the explicit formula and the recursive formula how do i do that?
math studies
An arithmetic series has a first term of -4 and a common difference of 1. A geometric series has a first term of 8 and a common ratio of 0.5. After how many terms does the sum of the arithmetic series exceed the sum of the geometric series?
arithmetic
Well I am really bad at math mostly multiplication and division.When I start to think that i am getting math my teacher teachs something new what do i do.
arithmetic
Clue 1: each digit increased by 1 and clue 2 add the numbers and the answer is 21. whats the six digit number?
arithmetic
what is the pattern 729,243,81,27,
Mathematics : Arithmetic Sequence
The 5th term and the 8th term of an arithmetic sequence are 18 and 27 respctively. a)Find the 1st term and the common difference of the arithmetic sequence. b)Find the general term of the arithmetic sequence.
Mathematics : Arithmetic Sequence
Consider the arithmetic sequence x+2, 18-x, 14+x,... a) Find the value of x. b) Find the general term of the arithmetic sequence.
10th grade
The common difference of an arithmetic sequence is 4. The 13th term is 103. Find the general term of the arithmetic sequence.
math
An arithmetic student needs an average of 70 or more to receive credit for the course. She scored 82, 64, and 98 on the first three exams. Write an inequality representing the score she must get on the last test to receive credit for the course.
arithmetic
the main street cinema holds 1,356 people. last saturday night they were sold out for two showings of super alien 5 there was a special price of 5$ for every seat for each showing how much money did the theatre take in that night
arithmetic
Is 85.6 bigger than 85.06
arithmetic
2/5 = ___ /10 = _____ /15
arithmetic
2.75+.003+.158=
Calc. for Reiny
this can be done by projections of two vector. recall that the scalar projection of vector b on vector a is a∙b/│a│ so let's find a point on the give line, e.g. the point B(6,0,1) (I let t=0) draw a perpendicular from your given point P(1,-5,2) to meet th...
arithmetic
You buy a square lot that is 154 yd on each side. What is its size in acres?
arithmetic
The question in my test paper asks the following- By making use of the correct order of operations, which of the following three equations (a-c) are possible? a)(35-13)x3 b)35-13x3= c)35-(3x13) I thought the answer would be a)only, but the answer sheet says all of them. Can yo...
arithmetic
Barry and Steve are good friends. Barry wants to buy a new computer, but he doesn't have the money for it right now. Barry says he will pay Steve $2000.00 in five years if Steve gives him $1600.00 for the computer today. Steve figures that there is an interest rate of 6% i...
Pre Algebra
I don't understand by what they subtract... I'm learning Arithmetic Sequences and here's the sequence: -6, -4 2/3, -3 1/3, -2 By what do they add here?
arithmetic
4mi=how many ft
I HAVE A MATH TEST TOMORROW HELPPP PLEASE!
im not sure how to find the first four terms of each arithmetic sequence tn=4+(n-1)(3) helpp me pleasee!
I HAVE A MATH TEST TOMORROW HELPPP PLEASE!
im not sure how to find the first four terms of each arithmetic sequence tn=4+(n-1)(3) helpp me pleasee!
Math
The sides of a triangle form an arithmetic sequence with a common difference of 2. The ratio of the measure of the largest angle to that of the smallest angle is 2:1. Find the area of the triangle. PLEASE HELP!
Precalc
The sides of a triangle form an arithmetic sequence with a common difference of 2. The ratio of the measure of the largest angle to that of the smallest angle is 2:1. Find the area of the triangle. Please help!
arithmetic
Hi can anyone help with fraction?? I want to check my answer: 1 1/2 x 1/4= 3/8 Thank you Ash
College testing
Im gettin ready to take a placement test for Devry Unviersity. it says Reading , Writing, Arithmetic and Algebra makes up the test. is there any way i can pepare for this test? how long does placement test usually take to complete?
Series
2(a)Consider the arithmetic progression with terms A3=-2 and A12=23. Find the sum of A1+......+A40 (can do) (b)In 1800 the population of England was 8 million. The economist Malthus (1766-1834) produced a hypothesis, suggesting:-that the population of england would increase, a...
arithmetic
There are 18 people. There is $72.00 to split among the top 4 people. How is that figured out?
arithmetic
what is 10% of 100?
arithmetic
3(p-q)=10 2(p-q)=7 p= q=
arithmetic
how many three-digit integers greater than 500 contain only odd digits
series
2(a)Consider the arithmetic progression with terms A3=-2 and A12=23. Find the sum of A1+......+A40 (can do) (b)In 1800 the population of England was 8 million. The economist Malthus (1766-1834) produced a hypothesis, suggesting:-that the population of england would increase, a...
Math
2(a)Consider the arithmetic progression with terms A3=-2 and A12=23. Find the sum of A1+......+A40 (can do) (b)In 1800 the population of England was 8 million. The economist Malthus (1766-1834) produced a hypothesis, suggesting:-that the population of england would increase, a...
Maths - Series
1(a)Glasses are piled upon each other to form a tower.The rows are numbered,beginning with the top row.There is a single glass in the top row,two glasses in row number 2,3 in 3;etc.This continues to the bottom of the tower.A tower is needed which uses a maximum of 3200 glasses...
arithmetic
Give the place value of 7 in 3,738,500.
Maths
1) In the arithmetic progression, the 8th term is twice the 4th term and the 20th term is 40. Find the common difference and the sum of the terms from the 8th to the 20th term inclusive. 2) Find the least number of terms of the AP, 1+3+5...that are required to make a sum excee...
arithmetic
Jenny's mom runs 3 miles 3 times a week . which number sentence can be used to find how many yards she will run in 1 day? A 3 x 3 x 1,760 B 3 x 3 + 1,760 C 3 x 1,760 D 3 + 1,760
math
The average, that is, the arithmetic mean, age of a group of doctors and lawyers is 40. If the average age of the doctors is 35 and the average age of the lawyers is 50, then what is the ratio of the number of doctors to the number of lawyers?
arithmetic
I am having a problem with ratio's
arithmetic
How do you solve this problem 1 1/5 minus 3/8?
arithmetic
picture 12960000cm area. frame 5cm wide. perimeter of frame/
arithmetic
There is going to be a tournament to decide which of 8 football teams is the champion. On the first Saturday the 8 teams will play each other in 4 games. on the second saturday the winners of the first 4 games will play,and on the third saturday the winners from the second Sat...
arithmetic
There is going to be a tournament to decide which of 8 football teams is the champion. On the first Saturday the 8 teams will play each other in 4 games. on the second saturday the winners of the first 4 games will play,and on the third saturday the winners from the second Sat...
arithmetic
what is an easy way to learn pie
arithmetic
i have equal amounts of quarters,dimes nickels pennies the value can be any except what 1.23 1.68 2.46
arithmetic
a triangle with a whole number sides has a perimeter 6 how many sides have the same lenght
arithmetic
the average degree measure of the angles of a triangle is
arithmetic
what is the difference between the area and the perimeter of a square with a sidelength 6
arithmetic
Word Problem: A hospital needs to figure the annual budget for an 11 bed facility based on 90% occupancy using a 4 day length of stay. 1st day = $625.00, 2nd day - $315.00, 3rd day = $315.00 and 4th day = $220.00. How much money can they expect to make for an entire year?
arithmetic
i am a multiple of 7.i am a fector of 210.the product of my two digit is odd.
arithmetic
31/3-22/5
arithmetic
127/12-514/15
arithmetic
There are 7 girls on a bus. each girl has 7 backpacks. In each backpack there are 7 big cats. For every big cat there are 7 little cats. Question: How many legs are there in the bus?
arithmetic
My question is about estimaing products Examples: 1/5 x 26; 1/3 x 4/11; and 4 1/3 x 3 7/8. i can't remember how to multiply these types of problems let alone,estimate the products. Can u please help me to help my son.
arithmetic
how do you break down a division problem such as 2%734?
arithmetic
how do you add fractions with uncommon denominators?
arithmetic
Write 0.125 as a fraction in simplest form
Math
Is there a mathematical formula to calculate this easily? 1 x 2 x 3 x 4 x 5...50 I know it's not an arithmetic/geometric series because that means 1 + 2 + 3 + 4 + 5...50
URGENT MATHS
I got 2 questions and I've been stuck on them for days and its due in 2 days. 1. For a quick way of doing multiplication, you can do: for example: 81 x 89=? First you do 1x9=9 in which case you have to add '0' in front of it to make it 09. Then you add 1 to any of ...
PreCal
Write a formula for the general term(the nth term)of the arithmetic sequence. Do not use a recursion formula. Then use the formula for a(n) to find the indicated term of the sequence Find a(11); 12, 10, 8, ... I came up with -10 ?
math
I'm just not good at word problems can someone help pleaes thanks a head of time An arithmetic student needs an average of 70 or more to receive credit for the course. She scored 89, 76, and 65 on the first three exams. Write an inequality representing the score she must g...
math
Hi I need someone to check my answers I'll show whatever work I have but for time purposes I'll just post my answers because I think I have most of them correct. Thanks! 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7. A)143 B)136 C)140 D)133 I ch...
Calculus
Write a formuls for the general term(nth term) of the arithmetic sequence. Do not use a recursion formula. Then use the formula for A to the n to find the indicated term of the sequence find a11: 12, 10, 8,...
Math essay
Can you please proofread my essay? My teacher is grading on accuracy, quality, correct spelling and grammer. The History of Mathematics As of today, there are plenty of new developments in the area of Mathematics. In at least some Mathematics courses, it doesn’t cross the...
Math
Solve the following problem taken from Treviso Arithmetic, a math textbook published in 1478 by an unknown Italian author: A man finds a purse with an unknown number of ducats in it. After he spends 1/4, 1/5 and 1/6 of the amount, 9 ducats remain. It is required to find out ho...
Calculus - need help!
Use the definition of the derivative to find f'(x) 1. f(x) 2x^2 + x - 1 Before the final step, my 'result' looked weird and I think I did something wrong in my arithmetic...someone correct me? Here's my work... BEGINNING STEP: lim [2(x + deltaX)^2 - (x + deltaX...
Sequences...again
Sequence T1 is obtained by adding the corresponding terms of S(sub) and S(sub2). so that T(sub1) = {2.6, 3.39, 4.297, 5.3561, . . .}. We shall write T(sub1) = S(sub1) + S(sub2) to convey the addition of S(sub1) and S(sub2) in this way. Is T(sub1) an arithmetic or geometric seq...
Sequences
A = {a1, a1 + d1, a1 + 2d1, …}, B = {a2, a2 + d2, a2 +2d2, …}. Investigate whether A + B and A x B are arithmetic or geometric sequences. If an arithmetic sequence is identified, state its common difference. If a geometric sequence is identified, state its common rat...
math-algebra
14. The last term of an arithmetic sequence is 207, the common difference is 3, and the number of terms is 14. What is the first term of the sequence?: A. 165 B. 171 C. 249 D. 168 Please explain. thanks
CALCULUS
If cos(t)=–7/9, find the values of the following trigonometric functions. Note: Give exact answers, do not use decimal numbers. The answer should be a fraction or an arithmetic expression. a) cos (2t) b) sin (2t) c) cos(1/2) d) sin (1/2) i dont even know what this questio...
algebra
1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 an=a1+(n-1)d a20=3+(20-1)7 a20=3+(19)7 a20=3+133 answer=b 2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15... a.an=n+6 b.an=6n+9 c.an=6n-9 d.an=n-3 an=a1+(n-1...
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