Solve for a. 7a - 2b = 5a + b a = 2b a = 3b a = a equals StartFraction 3 Over 2 EndFraction b. b a = a equals StartFraction 2 Over 3 EndFraction b. plz hurry

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

Louis wants to carpet the rectangular floor of his basement the basement has an area of 864 square feet the width of the basement is 2/3 its length what is the length of lewis's basement