Simplify 1/2+1/4+1/8
Simplify 1/2+2/3+3/4

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample