What is this series written in sigma notation?

2.5 + 2.5(1.2) + 2.5(1.2)2 + ⋯ + 2.5(1.2)87

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)

answer: he is 272195

step-by-step explanation: all you have to do is multiple 3535 and 77 and it equals 272195