Complete the recursive formula of the arithmetic sequence -16, -33, -50, -67,...−16,−33,−50,−67,... c(1)=
c(n)=c(n-1)+

c(1)=-16

c(n)=c(n-1)+-17

Step-by-step explanation:

The first term is -16 and the difference of these numbers is -17.

Got it from Kahn Academy. :)

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.