Ellie has a friend, Jack, that lives on a planet orbiting a star that is 20 light years away. On the night of her high school prom when Ellie is 17, she uses a radio telescope to send Jack one of her prom pictures (we will not speculate on her motives). Radio waves travel at the speed of light. Jack gets the picture and immediately uses his own radio telescope to send his own picture of his recent dinner date back to Ellie (again, let's not speculate ...). How old is Ellie when she gets Jack's picture?

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

where’s the list ? the question is incomplete

the components of a vector are the parts of the vectors that are to each other.

b perpendicular