if Alfa and beta are the roots of 2x^2-x-2=0, find the values of (i) alfa^3+beta^3, (ii) alfa^2 - beta^2

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.