Δabc underwent a sequence of rigid transformations to give δa′b′c′. which transformations might have taken place?

Need this asap if anyone can i would be very grateful. if you could show workings that would really

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

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