What is the next number: 747, 757, 766, 774, 781,787, 792, ... *

What is the frequency of the sinusoidal graph?

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

32a³b² 8ab² simplify the following expression.