Abag contains two steel balls and five brass balls. the total weight of the bag is 13 pounds. if two steel balls are added and two brass balls are removed, the bag’s weight decreases to 12 pounds. if s is the weight of a steel ball and b is the weight of a brass ball, the system of linear equations representing this situation is . solving the system of linear equations, the weight of a steel ball is , and the weight of a brass ball is . nextreset

x = the weight of one steel ball y = the weight of one brass ball 2x + 5y = 13 (2 + 2)x + (5 - 2)y = 12 by solving the above system of equations we find:

x = 1.5 lbs y =2 lbs one steel ball weighs 1.5 lbs.one brass ball weighs 2 lbs.

75

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,