5x +3y +6z=4 -3x + y + 5z=-5 -4x + 2y + z= 13

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?