Given points O(0,0), A(4, 12), and B(-9,3), are OA and OB perpendicular?*
A. OA and OB are perpendicular because ala2+b1b2=0.
B. OA and OB are not perpendicular because a1 b1+ a2b270
C. OA and OB are perpendicular because al b1+ a2b2 =0.
D. OA and OB are not perpendicular because ala2+b1b280.
This is a required question

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.