The area of a triangle is 200ft
what does x have to be

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.

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)