X+2/5=1 3/20;{1/4,1/2,1,1 1/4}

One positive number is 9 more than twice another. if their product is 95, find the numbers

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.  

Select all of the following expressions that are equal to 2.5.