A penny weighs 5.8x10^-3 lb. How many pennies are in a pile of pennies that weighs 3.596x10^4 lb? Write the answer in scientific notation.

Answer 1

To find the number of pennies in a pile that weighs 3.596x10^4 lb, we need to divide the total weight of the pile by the weight of an individual penny.

Weight of the pile = 3.596x10^4 lb
Weight of an individual penny = 5.8x10^-3 lb

Number of pennies = Weight of the pile / Weight of an individual penny
= (3.596x10^4 lb) / (5.8x10^-3 lb)
= (3.596/5.8) x (10^4/10^-3)
= 0.62 x 10^7
= 6.2x10^6

Therefore, there are 6.2x10^6 pennies in the pile.