A high-school band has d drummers and 10 violinists. There are 2 more violinists than drummers. Which of the following equations represents the situation? A- d = 10 + 2 B d = 10 - 2 C- d = 2 - 10 D d = 2 - 10

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?

Need on this geometry question. explain how you did it.

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi