A total of 22 dimes and nickels have a value of $1.90. If d represents the number of dimes and n represents the number of nickels, which system of equations models this situation? A.
d + n = 1.9
0.1d + 0.05n = 22
B.
d + n = 22
0.1d + 0.05n = 1.9
C.
d + n = 1.9
0.1d + 0.5n = 22
D.
d + n = 22
0.1d + 0.5n = 1.9

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