If Alice had 50 pieces of ribbon and she used 38 pieces how many pieces does she have leftover? (She has green ribbon to make her a new green dress)

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

Which of the following is not a subset of {1,2,3}?

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table