1. The net below shows the dimensions of Michelle's living room. She is going to put wallpaper on the living room walls. - 6 yd- T 4.2 yd 4.2 yd 3.5 yd Floor Ceiling What is the difference, in square yards, between the total and lateral surface areas of the room?

What is the square root of 45? (step by step working plz)

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations