Which polynomial represents the difference below? (8x^2 + 9) - (3x^2 + 2x + 5) a. 5x^2 - 2x + 4 b. 5x^2 - 2x + 14 c. 11x^2 - 2x + 4 d. 11x^2 + 2x + 14

"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 volume of this square pyramid?

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia