SOLUTION: hi, i need to know the between number 6, 13, ?, 33.And also for another one.The questions are, __?___,7, 26, 63. please reveal me as soon as possible

Algebra.Com
Question 1055907: hi,
i need to know the between number
6, 13, ?, 33.And also for another one.The questions are,

__?___,7, 26, 63.
please reveal me as soon as possible

Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!
     
6, 13, ?, 33



Substitute n=1, a1 = 6


 




Substitute n=2, a2 = 13


 




Substitute n=4, a4 = 33


 




Solve the system:



and get A=1, B=4, C=1

So the formula is

  

Substitute n=3







6, 13, 22, 33 

-------------------------

__, __, 7, 26, 63.



Substitute n=3, a3 = 7


 




Substitute n=4, a4 = 26


 




Substitute n=5, a5 = 63


 




Solve the system:



and get A=9, B=-44, C=58

So the formula is

  

Substitute n=1







Substitute n=2









23, 6, 7, 26, 63

Edwin
RELATED QUESTIONS

Hi,i need to know the next number of the sequences.The question is 23,35,57,711,?. and... (answered by Edwin McCravy)
One number exceeds another number by 26. the sum of these numbers is 64. What are these... (answered by scott8148)
How would you write 10 to the -6 in decimal form? Also, another problem, 6x10 to the -3? (answered by scott8148)
the questions are: Between which two consecutive integer is sqrt(26)? and Find the... (answered by josmiceli)
I need help by next friday. thanks #7 Find the median for the following data.... (answered by richard1234)
I need help on this problem. Please show me it in the "Five-step" plan method. One... (answered by scott8148)
Hi, I'm Lauren and I really need help with this Math Problem. Please help me and e-mail... (answered by checkley71)
Hi, My name is Lauren and I really need help with my homework. Can you please help me... (answered by stanbon)
I need to know the next number in the sequence and why for the following two please 38 (answered by gsmani_iyer,Edwin McCravy)