#2 If the perimeter of a square is 20, what is the length of the diagonal.
Hint: Draw a picture. Round your answer to the nearest tenth if necessary.

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions