The circumference of a circle is C centimeters. The diameter of the circle is 13 centimeters. Which expression best represents the value of pie

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?