Represent the number 256 in both exponent and expanded form

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

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