Alex was thinking of a number. Alex doubles it ,then adds to get an answer or 22.7. What was the original number?

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

What is the solution to the equation in the & show work i’m very

Two numbers have a sum of -19. one number is x. what expression represents the other number?