2. Brandon has a male puppy with a mass of 3 1/2 kilograms and a female puppy with a mass of 2 1/5 kilograms. How much
greater is the male puppy's mass than the female puppy's?

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?

In what organelle does photosynthesis take place?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).