Find the 43rd term of the sequence 13.1,3.1,-6.9,-16.9,

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?

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?