Which triangle is both scalene and right use the ruler and protractor to solve. click the ruler bottom and protractor button below??

Which of the following parabolas opens down?

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

Solve for x and select the correct answer