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Tutors Answer Your Questions about Sequences-and-series (FREE)
Question 161822This question is from textbook Algebra 1
: Please can you help me with Arithmetic Sequences because I don't know how to
do it. The problem say determine whether each sequence is an arithmetic
sequence. If it is, state the common difference.
The problem is 18,24,30,36,....
Thanks for your help because I don't get how to do it so if you help me out to
were I can do it on my own then thanks a lot.It's on page 236 my teacher wants
me to do all the even numbers on the practice and apply.This question is from textbook Algebra 1
Click here to see answer by Mariah24(4)   |
Question 161819This question is from textbook Algebra 1
: Please can you help me with Arithmetic Sequences because I don't know how to
do it. The problem say determine whether each sequence is an arithmetic
sequence. If it is, state the common difference.
The problem is 2.1,4.2,8.4,17.6,....
Thanks for your help because I don't get how to do it so if you help me out to
were I can do it on my own then thanks a lot.It's on page 236 my teacher wants
me to do all the even numbers on the practice and apply.
This question is from textbook Algebra 1
Click here to see answer by checkley77(7072) |
Question 161819This question is from textbook Algebra 1
: Please can you help me with Arithmetic Sequences because I don't know how to
do it. The problem say determine whether each sequence is an arithmetic
sequence. If it is, state the common difference.
The problem is 2.1,4.2,8.4,17.6,....
Thanks for your help because I don't get how to do it so if you help me out to
were I can do it on my own then thanks a lot.It's on page 236 my teacher wants
me to do all the even numbers on the practice and apply.
This question is from textbook Algebra 1
Click here to see answer by Mariah24(4) |
Question 161829This question is from textbook Algebra 1
: Please can you help me with Arithmetic Sequences because I don't know how to
do it. The problem say determine whether each sequence is an arithmetic
sequence. If it is, state the common difference.
The problem is 7/12,1_1/3,2_1/12,2_5/6,....
Thanks for your help because I don't get how to do it so if you help me out to
were I can do it on my own then thanks a lot.It's on page 236 my teacher wants
me to do all the even numbers on the practice and apply.
An arithmetic sequence happens when the difference between successive terms is always the same (i.e. you get the next terms by adding or subtracting the same number to the previous one)
Quick example 1, 7, 13, 19
1+6=7+6=13+6=19....in this case the common difference is 6
Now in your situation you want to see if the numbers in your sequence are increasing by the same number.
1. When dealing with fractions and mixed numbers it is always a good idea to change mixed numbers to improper fractions
2. When dealing with fractions and arithmetic sequences you should first make sure all fraction have the same denominator...
1st term: 7/12
2nd term: 1_1/3=4/3 * (4/4)=16/12
3rd term: 2_1/12=25/12
4th term: 2_5/6=17/6 * (2/2)=34/12
Now find the difference between the 2nd term and 1st term: 16/12 - 7/12 = 9/12
Find the difference between the 3rd term and the 2nd term: 25/12 - 16/12= 9/12
And the difference between the 4th term and 3rd term is also 9/12
Therefore, the sequence is arithmetic and the common difference is 9/12This question is from textbook Algebra 1
Click here to see answer by eperette(173) |
Question 164324: how many 1's are between the numbers 1-500 ? I have tried to rite down all the numbers that have the number 1 in them and i came up with 150. Am I rite ? I am in 5th grade and this is for a study guide for a math tournament .
Click here to see answer by Fombitz(2113)  |
Question 165495: I need a little help!!
Find the sum of the first 20 terms of this series
1 + 8 + 64 + 512 . . . .
I figured out this is a geometric series with a ratio of 8.
The formula I'm using is Sn=t1(1-r^n)/1-r
This is what I have so far S20=1(1-(8)^20)/1-8
Is this right so far? And what do I do with the -7 as a denominator?
Click here to see answer by Alan3354(6097)  |
Question 166647: you are building an addition on to your house. you only have enough money to buy 70 feet or exterior building materials. one side will be against the original house, so you only have to have materials for 3 sides. what would be the dimensions of the additon needed to give the maximim area? the is the maximum area?
thank you i really need help
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 167753: Miku and John began biking from the same place on the same road, heading in the same direction. Each day, Miku bikes 25 miles. John bikes 5 miles the first day, 8 miles the second day and so on. Each day, biking three more miles than he biked the previous day. If they began on July 1, on waht date did John passed Miku?
I got the answer with a table but i dont know how to show it into algebraic equation.
How do you change John's pattern into an equation?
5,13,24,38,56,76,99,125...........
My work so far:
Miku= 25x x = days
John= 5+(5+3)+(5+3+3)+(5+3+3+3).....
5x+???= nth term
so far, the only part of the equation ive figured out is the 5x....
though i think that there should be a disributive property in the equation.
Im really confused and have been working this problem for hours.
I really need help.
Click here to see answer by scott8148(3385)  |
Question 168807: Cell Division: One leukemic cell injected into a healthy mouse will divide into two cells in about 1/2 day. At the end of the day these two cells will divide again, with the doubling process continuing each 1/2 until there are 1 billion cells, at which time the mouse dies. On which day after the experiment is started does this happen?
I'm having a horrible time coming up with a formula for this problem.
I would appreciate any help you can give me on this one.
Thank you so much, ahead of time!
Click here to see answer by Alan3354(6097) |
Question 169218: Have trouble understanding sequences, can anyone give assistance?
Find ratio, r, the general term, a(base-n), and a(base-11)
2,-6,18,-54,162,...
Click here to see answer by Mathtut(3670) |
Question 169219: How do I find the next two terms of geometric sequence 6250, 5000, 4000,...
and also how do I find four geometric means between 4096 and 972. I must show my work and don't know how to do these.
Please help.
Thanks
Click here to see answer by checkley77(7072) |
Question 171173: Will someone please help me. I don't know where to begin on this problem. I have to show all my work.
Find Sn for the arithmetic series in which A1=-11, An=13, and n=7.
I have a big test later today and really need help.
Thanks
Click here to see answer by monika_p(55) |
Question 171948: My boyfriend and I were making up Algebra problems during a boring convention meal and ended up getting four different answers to this one. It seems we have forgotten the Order of Operations. (It's been a few years since either one of us was in school.) What is the solution to this equation? And, what is the order of operations?
7/4(6+6+6) = 30*4/3(5-6)X
Thank You;
Brenda and Lee
Click here to see answer by edjones(3298)  |
Question 171948: My boyfriend and I were making up Algebra problems during a boring convention meal and ended up getting four different answers to this one. It seems we have forgotten the Order of Operations. (It's been a few years since either one of us was in school.) What is the solution to this equation? And, what is the order of operations?
7/4(6+6+6) = 30*4/3(5-6)X
Thank You;
Brenda and Lee
Click here to see answer by Mathtut(3670) |
Question 172614: find the first four terms in the geometric sequence with the initial term -1 and common ratio r=3
a. -1,-3,-9, -27
b. -1, 2, 5, 8
c. 3, 2,1, 0
d. 3, -3, 3, -3
show all work
Click here to see answer by rosstutoring_93(3) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215
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