Answer:
Answer 7 days...
Step-by-step explanation:
- 4 FRIENDS,6 DAYS=16000
- 1FRIEND,6DAYS=4000
- 1 FRIEND,1 DAYS=4000/6
- THERFORE,6 FRIENDS,1DAY=4000/6 *6
- 6FRIENDS,X DAYS=28000
- 4000*X=28000(SINCE 6 FRIENDS FOR 1 DAY WAS 4,000)
- X=28,000/4000
- X=7DAYS
Imagine, at the first day you have only one penny. Then tomorrow you have 2 pennies, next day you have 4 (2x2), next day you have 8 (4x2), next day you have 16 (8x2).... and so forth.
It looks like geometric sequence isn't it? (the ratio between the number of pennies that you have from the 2nd day and the 1st day is 2)
So, by using geometric sequence theorem we can total those pennies until day-27
S (total pennies at day-27) = (1)(2^27-1) / 2-1 = 2^26 pennies
So, you have 2^26 pennies.. a big number of pennies huh?=))
{The formula is: S = a( r^n-1) / r-1
Where:
a= the number of pennies that you've got at the 1st day
n= number of days you spent to collect those pennies)
r= the ratio of the number of pennies}
Answer:
I believe its D
Step-by-step explanation:
because the Xs do not repeat but on the other answer choices , they do .
Hope I could help -
Sleepy~
The product of 379 and 8 is 3032. This number falls between 3031 and 3033.
