Let u = {1,2,3,4,5,6,7,8,9,10).
let a = {1,3,4,7,10).
let b = (2,5,7,8,10).
let c = 2,3,7)
determine a-b.

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

What is the value of f(x) = 2.2 for f(-2)?