There are 15 coins, which are nickels and dimes only, in Edith's purse. The total value of the coins in her purse is $1.15. If n = nickels and d = dimes, the scenario can be
represented by the following system:
n + d = 15
0.05n + 0.10d = 1.15
How many nickels and dimes are in Edith's purse?

6x + 3y = -6 2x + y = -2 a. x = 0, y = -2 b. infinite solutions c. x = -1, y = 0 d. no solution

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14

How do newtons third law of motion demonstrates on a rollar coster