What is the percent error if the bolt is actually 2.5 inches long is measured to be 2.6 inches long?

Would greatly appreciate these 3 answers

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?

The first triangle is dilated to form the second triangle. select true or false for each statement. statement true false the scale factor is 0.625. the scale factor is 1.6. a right triangle with a side length of .5. an arrow points to a larger right triangle with a side length of .8