Which of the following lists does not include all the factors of the number? a. 10: 1, 2, 5, 10 b. 5: 1, 5 c. 4: 1, 2, 4 d. 21: 1, 21

Ineed to know the answer to this algebra question.

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

The difference between the measures of two complementary angles is 14. find the measure of both angles.