In the coordinate plane, what is the length of the line segment that connects points at (4, −1) and (9, 7) ?

enter your answer in the box. round to the nearest hundredth.

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?