9) -1 +5n> -26 and 7n-25 < 12
how do you solve this?

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?

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1