There are 30 people at a meeting, they each shake hands with everyone. how many
handshakes were there? hint: think "the number of combinations of 30 people at a
meeting giving handshakes to each other 2 at a time."

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-responsequestion. there are 15 questions on the test and the students have been given 55 minutes to complete itwhich value could replace x in the table? 5507-m23-m8(15-m)8(15)-m