how do i report someone deleting all my answers? this girl is making me mad i didn't do anything wrong shes deleting them for no reason

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers