Select all of the expressions that correctly calculate the perimeter of the following shape. 10 300 + 1007 40 + 2071 80 + 207 120 + 207 10 + 10 + 107 + 10 + 10 + 10

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

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.  

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|