ABCD is a paralellogram. The diagoanls of ABCD intersect at O A) Express the vector CA in terms of A b) Express the vector AB in terms of A and B c) Express the vector BC in terms of A and B

What's the difference between: x≥0 and nonnegative integer. ?

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

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?