Hi what’s 2+2? Anyone would like to help..?

What term best describes a line ans a point that lie in the same plane

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

What is the result of adding the system of equations? 2x+y=4 3x-y=6