Use slopes to determine if the lines y =3x/4+ 3 and 8x + 6y = -5 are perpendicular. All I need to know is if its perpendicular or not! Thanks so much

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2