In a given year, about 1.52×10^10

pieces of first-class mail are delivered in the U.S. If each piece of mail carries a stamp costing $0.55, what is the total cost in dollars to deliver all the pieces? Write the answer in scientific notation, expressed to the exact decimal place.(1 point)
$

1 answer

To find the total cost to deliver all the pieces of mail, we can use the following calculation:

Given:

  • Number of pieces of mail = 1.52×1010
  • Cost per stamp = $0.55

Total cost can be calculated by multiplying the number of pieces of mail by the cost per stamp:

Total Cost=Number of pieces of mail×Cost per stamp

Substituting the values:

Total Cost=(1.52×1010)×0.55

Now, we can perform the multiplication:

1.52×0.55=0.836

Next, we multiply by 1010:

Total Cost=0.836×1010

To express this in proper scientific notation, we convert 0.836 to 8.36 by moving the decimal one place to the right, which means we decrease the exponent by 1:

0.836×1010=8.36×109

Thus, the total cost in scientific notation is:

8.36×109