What is 10and 1 half divided by 7 eights

What is the total surface area of this square pyramid?

What additional information could be used to prove abc =mqr using sas? check all that apply.

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