PLEASE HELP ASAP !!
write an algebraic expression for the phrase r less than 21

1. what are the missing reasons in the proof 2. it's in the second picture and 3

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Use the irregular polygon below. show all work. a. find the perimeter. b. find the area. the angles of the irregular polygon is 2, 8, 8, and 4.