What pair of numbers has a sum of 1 and a difference of 9? x y x + y = 1

x y x - y = 9

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?