Elena wrote the following code in Scratch to have the sprite move and then turn around. However, the code does not work as expected. What should be done to fix the error? Change "move 20 steps" to "move 10 steps"
Change "turn left 180 degrees" to "turn left 90 degrees"
Change "turn left 90 degrees" to "turn right 180 degrees"
Change "turn right 90 degrees" to "turn left 90 degrees"

Which of the following “invisible” marks represents an inserted tab?

The file sales data. xlsx contains monthly sales amounts for 40 sales regions. write a sub that uses a for loop to color the interior of every other row (rows 3, 5, etc.) gray. color only the data area, columns a to m. (check the file colors in excel. xlsm to find a nice color of gray.)

Why were most movies from the late 1890s until the early 1930s only filmed in black and white? there were only a few people who could afford the technology to produce color motion pictures back then. audiences did not want color motion pictures until later. the film used to make color motion pictures often overheated, which was a safety hazard, so it was generally not allowed. color films had to be hand-colored, frame by frame.