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#1 Re: Help Me ! » Sequences & Series » 2016-04-29 00:37:06

When was 9, 10, 12 done ? i didn't see them.

#2 Re: Help Me ! » Solve The Matrix Equation For X » 2016-04-29 00:19:54

Thank you, where is number 12, 13, 14, 15

#3 Re: Help Me ! » Solve The Matrix Equation For X » 2016-04-28 15:06:15

I've a;ready looked at that today lol. Math is fun is where i usually look for help.

#4 Re: Help Me ! » Sequences & Series » 2016-04-28 15:00:39

Okay, thank you for your help tonight. I'll keep a look out for your posts tomorrow!

#5 Help Me ! » Sequences & Series » 2016-04-28 14:47:12

Lpravia020614
Replies: 9

For questions 3-5, find the first 4 terms and the 8th term of the recursively-defined sequence.

3.  b1 = 2 and bk+1 = 3bk, for k>0



4. v1 = 0.75 and vn = (-2)vk-1 for n>1



5. c1 = 2, c2 = -1, and ck+2 = ck + ck+1 for k>0



8. The third and sixth terms of a geometric sequence are -75 and -9375 respectively.  Find the first term, the common ratio, and an explicit rule for the nth term.

For problems 9 and 10, write each sum using summation notation.

9.2 + 5 + 8 + 11 + ... + 29


10. 6 - 12 + 24 - 48 + ...

12. Find the sum of the geometric sequence 42, 7/6, ..., 42(1/6)^8 


For problems 13 and 14, find the sum of the first n terms of the sequence.  The sequences are either arithmetic or geometric.

13.  -1, 11, -121, ...; n = 9


14. 14, 8, 2,...; n=9

#6 Re: Help Me ! » Solve The Matrix Equation For X » 2016-04-28 14:33:29

12. [[ 9   -4         [[ -37 -75
      [ -3  -8]]  X=  [  115  -3]]


13. [[ 11  1          [[-119  17
       [-6  10]] X=  [ -30  54]]

14. [[ -8 6          [[ 12  16
       [ -3 -6]]  X=[  87  27]]

15. [[ -3  9        [[ -51  -87
       [ 11 7]] X= [ -173  79]]

16. [[ 7  -6          [[ 7  -16
      [ -8  -7]]  X= [ -8  -148]]

17.  [[ -10  -12       [[ 50  -196
        [ -11  -1]] X= [ -6  -118]]

18.  [[ -9  -1         [[ -21  70
       [  4  -11]] X= [ -128  -157]]

19.  [[ -8  11        [[ 24  77
       [ -11  -1]] X= [ 33  122]]

20.  [[ 1 -10       [[ 89  -50
        [ 8  -9]] X= [ 73 -116]]


Sorry it took so long to post i had to retype everything.

#7 Re: Help Me ! » Solve The Matrix Equation For X » 2016-04-28 14:12:56

When i do that, it puts it in a weird font.

#8 Re: Help Me ! » Lesson 20 Sequences and Series » 2016-04-28 14:11:52

Can you tell me how you go that? i want to try the others on my own.

#11 Re: Help Me ! » Solve The Matrix Equation For X » 2016-04-28 13:58:38

It wont let me upload it there either.

#12 Re: Help Me ! » Lesson 20 Sequences and Series » 2016-04-28 13:56:29

My last lesson is lesson 20 however i completes that lesson on my own, it was easy. This lesson is #16 and its very confusing. there are 20 questions per lesson and i answer 1-10 correctly but when i attempted 11-20 i got the ALL wrong. i dont know how to do this, it is causing me to fall behind. so yeas i would enjoy an answer to this.

#14 Re: Help Me ! » Solve The Matrix Equation For X » 2016-04-28 13:44:51

C:\Users\Diana\Documents\Algebra 2B Lessons 16.docx
lets see if that will work

#15 Re: Help Me ! » Lesson 20 Sequences and Series » 2016-04-28 13:39:11

Not really, since i am an online student, they don't really teach they just give you the lesson and expect you to know everything.

#17 Re: Help Me ! » Lesson 20 Sequences and Series » 2016-04-28 12:27:22

I am lost what do i multiply, do i multiply
(6*6) (-3*-3) (7*7) (9*9)

#18 Re: Help Me ! » Solve The Matrix Equation For X » 2016-04-28 12:23:01

Thank you for removing it.

The materical is in my word document, can i post that link here so you can see my work ?

#19 Help Me ! » Solve The Matrix Equation For X » 2016-04-28 10:10:12

Lpravia020614
Replies: 19

If possible, someone e-mail me

It wont let me post the pictures for the lesson. Thanks in advance.

#21 Re: Help Me ! » Lesson 20 Sequences and Series » 2016-04-27 16:03:55

[[ -3, 31
   0.57, -2.33]]

Is that correct ?

#22 Re: Help Me ! » Lesson 20 Sequences and Series » 2016-04-26 00:59:32

i didn't mean to put 15 in there, but now i'm doing a revision for Lesson 16 and it's asking me to solve the matrix equation for X:

How would I do that.

[[  6   -3 
    7    9 ]] X =  [[ -18   -93 
                            4      -21 ]]

#23 Re: Help Me ! » Lesson 20 Sequences and Series » 2016-04-25 08:50:38

Gosh thank you so much bobbynm. I have a few more questions as well.

These are confusing me too sad

For problems 13 and 14, find the sum of the first n terms of the sequence.  The sequences are either arithmetic or geometric.

13.  -1, 11, -121, ...; n = 9

14. 14, 8, 2,...; n=9

15. Determine whether the infinite series   is equal to a real number.  If so, find the sum.

#24 Re: Help Me ! » Lesson 20 Sequences and Series » 2016-04-24 07:04:17

Im stuck on these questions too ! Help please, this is my last lesson in online school!
For problems 9 and 10, write each sum using summation notation.

9.2 + 5 + 8 + 11 + ... + 29

10. 6 - 12 + 24 - 48 + ...

11. Find the sum of the arithmetic sequence 2, 4, 6, 8, ..., 70.

12. Find the sum of the geometric sequence 42, 7 , 7/6,...,42(1/6)^8

#25 Re: Help Me ! » Piece wise functions » 2016-02-07 11:48:03

Thank you for the help.
for 2c it has to be in equation form, how would i do that ( like variable wise)

For #1 you kind of confused me..

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