Directions: Find the distance between each pair of points. 1. (-4, 6) and (3,-7)
2. (-6,-5) and (2.0)
4. (0, -8) and (3, 2)
3. (-1, 4) and (1,-1)

What is the approximate circumference of the circle shown below?

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?

Bring the fraction a/a-4 to a denominator of 16-a^2