What is 9hours 24min and 13 seconds minus 6h 45min and 9s

What values of c and d make the equation true?

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression