Plz what is 48100000000000 in scientific notation 4.81×10^-11 4.81×10^-13 4.81×10^11 4.81×10^13

Geometry: determine whether segment mn is parallel to segment kl. justify your answer. jm 6 mk 3 jn 8 nl 4

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer