A triangle has sides with lengths of 5 x - 7 3 x - 4 + 2x - 6 what is the perimeter of the triangle

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Write the pair of fractions as a pair of fractions with a common denominator