Identify the property: (10 + 5) + 6 = 10 + (5 + 6)

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =

Need on this one asap im almost done with this subject