Why is it not possible to make a right triangle using lengths 20 feet, 40 feet, and 50 feet? A. 20+ 40 is greater than 50
B. 50- 40 does not equal 20
C. 20 squared + 40 squared does not equal 50 squared
D. (20+40) squared is greater than 50 squared

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?