Cuántos rombos se pueden construir sólo sabi conociendo sus ladosCuántos rombos diferentes se pueden trazar sólo conociendo la longitud de sus lados

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad