V(r) = t, v(p) = f, v(q) = f. question 8 1 pts use the truth-tree decision procedure (relying on proof tools or pen/pencil and paper) to determine whether paqe q is deductively valid. valid. consistent undecideable. invalid. question 9 1 pts facetime

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