Combine like terms: -5a -12a + 2b - 3b

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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