Mr. Sullivan is organizing teams for the middle school’s annual field day. There are eight classes at the school and 21 students in each class.

A80-foot piece of siding is cut into three pieces so that the second piece is four times four times as long as the first piece and the third piece is five times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

What is true about the dilation? it is a reduction with a scale factor between 0 and 1. it is a reduction with a scale factor greater than 1. it is an enlargement with a scale factor between 0 and 1. it is an enlargement with a scale factor greater than 1.

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?