An object is launched straight up into the air with an initial velocity of 40 meters per second, from a height 75 m above the ground. How many seconds later will the object hit the ground?

You are looking at two area rugs for your bedroom. one is a square with side lengths of 6.3 feet. the other is a rectangle that is 4.8 feet by 8.2 feet. which rug will cover the greatest area? how much more area will it cover? with work plzz and u so much

What is the missing constant term in the perfect square that starts with x^2 -20x

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day