Melanie is on walk. So far, she's hiked 30% of the way, which is 90 yards. How long will her walk be in total?

Which expression is rational? 6. , square root two, square root 14, square root 49

What is r i 4.5+10r=-6.5 with work pls

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