Can anyone please help me answer this Geometry ( Math ) question? How far from the base of a house do you need to place a 13-foot ladder so that it exactly reaches the top of a 12-foot wall?

3. solve by graphing: y = 2x + 6 x + y = -3

What's the difference between: x≥0 and nonnegative integer. ?

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.