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What is the pattern: 4, 6, 9, 13 1/2

13 1/2= 13.5 by the way...

I don't understand & have to also give the inductive reasoning or whatever it's called...

2006-09-04 11:46:12 · 3 answers · asked by mani boo/poo 2 in Education & Reference Homework Help

I'm in the 8th grade here... can you say it simpler? Please?

2006-09-04 12:49:30 · update #1

3 answers

Ok, let's see this one.

First element: 4
Second : 6 Difference = 2 = 4/2 + 4
Third : 9 Difference = 3 = 6/2 + 6
Fourth : 13.5 Difference = 4.5 = 9/2 + 9

The series works as follows:

n element = (The previous element)/2 + Previous Element

Easy as cake! Good Luck.

2006-09-04 12:08:50 · answer #1 · answered by alrivera_1 4 · 0 0

Each number is 1-1/2 times the previous number.

2006-09-04 18:52:03 · answer #2 · answered by Judy 7 · 0 0

4+2=6
6+(2*1.5)=9
9+(3*1.5)=13.5
13.5+(4.5*1.5)=20.25
20.25+(6.75*1.5)=30.375

the next number is the total plus the difference between the two prior numbers in the sequence multiplied by 1.5 gives the next number in the sequence

2006-09-04 19:03:11 · answer #3 · answered by idesofmarch69 1 · 0 0

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