The half- life of 1-137 is 8.07 days. if 100 grams are left after 40.35 days, how much grams were in the original sample?

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct

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

You are looking for your first credit card. you plan to use this credit card only for emergencies and to pay the credit card balance in full each month. which credit card feature is most important? a. no annual fee b. low apr c. generous rewards program d. no balance transfer fee select the best answer from the choices provided