Find the mean of the following numbers.
-2,9,-10,3,5,1

a. 1
b. 6
c. -6
d. -1

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?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

Factor the polynomial by its greatest common monomial factor.