Hi i need help with this thank you

49xy +34y - 72z. determine the degree of the polynomial

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

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