Atriangle has two sides of 10 and 14 what value could the third length be

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m

What is the perimeter of an equilateral triangle if each side is (x+3)?

Identify the number as a regional or irrational.explain. 291.87