Given that bisects ? dbc, which statement must be true? m? abd = m? abc ab ? bc b is the midpoint of dc. m? dbc = 90°

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?