Posted by **Jordan** on Thursday, December 18, 2008 at 11:01pm.

I have a word problem with a pattern. I just can't figure it out. - On the first night, Kim's mom gave her a nickel, on the second, she gave her five nickels, on the third, she gave her fourteen nickels and on the fourth night she gave her thirty nickels. Her mother asked Kim to figure out what she would recieve on the tenth night. - I know this must be easy, but I just don't see it.

- 6th grade Math -
**Quidditch**, Thursday, December 18, 2008 at 11:30pm
night 1=1

night 2=5

night 3=14

night 4=30

difference from 1 and 2 = 4

difference from 2 and 3 = 9

difference from 3 and 4 = 16

Do you see anything special in the differences?

- 6th grade Math -
**Reiny**, Thursday, December 18, 2008 at 11:42pm
firs form two columsn

1 1

2 5 4

3 14 9

4 30 16

if you take the difference between the number of nickels for consecutive days you get the sequence 4,9,16,...

that is, day2 nickels - day1 nickels = 4

day3 nickels - day2 nickels = 9

day4 nickels - day3 nickels = 16

notice that these are perfect squares, so we could continue that difference column as 4,9,16,25,36,49 ....

and build up our chart by working backwards.

the next row would be

5 55 25 and then

6 91 36 ... continue to row 10

there are more sophisticated ways to do this, but not suitable for grade 6 math

(I noticed that the third difference column gives me a constant of 2, suggesting that a cubic expression can be found for 1,5,14,30,...

but that would be beyond grade 6 math)

- 6th grade Math -
**Danielle**, Friday, December 19, 2008 at 3:35am
first night=1 nickle

second night=5 nickles

third night=14 nickles

fourth night=30 nickles

5-1=4

14-5=9

30-15=16

9-4=5

16-9=7

there for every day the mom gives the child two more nickles plus what she got the day before, so the next night the child should receive 54 nickles. I'm prety sure.

- 6th grade Math -
**Rachel**, Monday, January 5, 2009 at 8:39pm
your poopy butthole!!!

i kicked your dog?

- 6th grade Math -
**jabari**, Tuesday, January 6, 2009 at 10:01pm
no

## Answer This Question

## Related Questions

- math - The lunchroom workersare giving away free cookies today. They gave the ...
- please show how to set up this problem - Kim, Beth, and Jenny gave money to buy ...
- math 3rd grade - We have figured out answer 1 BUT we cant figure out the steps ...
- 3rd grade math - We have figured out answer BUT we cant figure out the steps to ...
- math - if loar's mom gave her 3/4 of a dollar.joe's mom gave him 4/5 of a dollar...
- Math word problem - Ryan collected 43 candy bars on Halloween he gave 15 of ...
- 7 grade fraction word problem - I am a mom that can't figure out how to help my ...
- Math Word problem - Can someone please help guide me with this one? I am not ...
- Math Word problem - Can someone please help guide me with this one? I am not ...
- algebra homework - Kim starts to walk 3 mi to school at 7:30 A.M. with a ...

More Related Questions