30 former classmates gathered to celebrate the anniversary of their school graduation. each of them greeted and shook hands with every other without any exceptions how many handshakes were exchanged when everyone was finished?
note: when person a shakes with person b, person b is also shaking with person a. it is counted as one handshake.

Which statement is true? the given sides and angles cannot be used to show similarity by either the sss or sas similarity theorems. the given sides and angles can be used to show similarity by the sss similarity theorem only. the given sides and angles can be used to show similarity by the sas similarity theorem only. the given sides and angles can be used to show similarity by both the sss and sas similarity theorems.

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

How do you solve a question like this?