How many days would it take you to count a million pennies if you could count one penny each second

60 pennies per minute
3600 pennies per hour
3600*24 pennies per day
so the answer is 1.000.000/(3600*24)

It would take 1 week, 4 days, 13 hours, 46 minutes and 40 seconds.

Ithink the answer would be knew

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.