5/90 in simplest form

Geometry paper. i don't know how to do the rest. questions 5. 8. 9. and 10.

Find the nonpermissible replacement for binthis expression.b2/5b +5

The four students in the table below each recorded the time and distance traveled while exercising. exercising distance (miles) time (minutes) gia 2 30 harris 5 50 ian 3 40 jackson 4 80 which list ranks the students from fastest walker to slowest walker? jackson, gia, ian, harris harris, jackson, ian, gia harris, ian, gia, jackson jackson, harris, ian, gia