Nadia mails 3 packages. The first weighs 12.329 pounds, the second weighs 10.45 pounds, and the third weighs 19.2 pounds. What is the total weight of the packages? Show your work.

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

What is the total surface area of this square pyramid?