Given equations a and b as 2/5x+y=12 and 5/2y-x=6 , respectively, which expression will eliminate the variable x?

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

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

On average a herd of elephants travels 10 miles in 12 hours you can use that information to answer different questions drag each expression to show which is answers