It took 30 minutes for melinda to run 4 miles
(find the unit rate and explain what they mean)

Which letters from the table represent like terms? a and b b and c a and d b and d

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of