Tom's and tim's ages add up to 21 years. in 3 years, tom will be twice tim’s age. how old are they now?

tom is 15, and tim is 6.

tom is 12, and tim is 9.

tom is 16, and tim is 5.

tom is 14, and tim is 7.

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin