If a1= 2 and an=-2 a n-1 then find the value of a6

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

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