Calling all technology geeks— whenever i try to take a video; the video becomes muted and the sound button looks like this. does anyone know how to fix this?

Jenny needs to record the names of 30 students, write down the subjects they studied, and note their grades in each subject after the midsemester exams and the end-of-semester exams. she divides the midsemester and end-of-semester information into two separate worksheets, sheet 1 and sheet 2. how will she rename the two worksheets?

Lisa is making a presentation for her project and she wants to use the logo of her company in her presentation. which element would she use to make her logo stand out in her presentation? a. gradation b. contrast c. alignment d. balance

Your program should prompt the user for the dimensions of the two squares matrices, making sure that the user input is greater than or equal to 4.[ yes, an example would be a4x4matrix]2.if the above is not met, prompt the user for a new value.3.now generate random integernumbers to fill both matrices.4.display these two matrices on the screen.5.multiply the two matrices and display the result on the scre