The total length of strands after one split-an-stretch is 2* 5 ft = 20 ft
After doing it twice, it is 40 ft
After n spits and stretches, it is
10*2^n long
To make the Chinese dish "dragon's beard noodles," fold a 5 ft. strand of dough in half. Stretch the dough back to its original length so that two thinner strands are formed. Repeat this folding and stretching process over and over to produce increasing numbers of progressively thinner noodles.
a) Write an equation that gives the combined length L in feet of all the noodles after folding and stretching the dough x times. How did you get your answer?
This problem totally confuses me out of my pants.
3 answers
isn't 2*5ft eqaul 10 feet, not 20 ?
After doing it twice would be 20 ?
After doing it twice would be 20 ?
I agree that 2 * 5 ft = 10.
I would go with 5 * 2^n, since you started out with 5 ft.
I hope this helps a little more. Thanks for asking.
I would go with 5 * 2^n, since you started out with 5 ft.
I hope this helps a little more. Thanks for asking.
1 answer