What number should be added to the expression x²+14x to change it into a perfect square trinomial? 7 14 28 49

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle