Choose the correct conic section to fit the equation x²/16-y²/4=1

"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.

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

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c