Solve the following systems system. A) 2y = x + 1

-2x – y = 7

B) 3x - 2y = 8

2x - 2y = 5

C) 6x - 4y = 54

​​​​​​​ -9x + 2y = -69

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x