1. choose an appropriate metric unit for the mass of concrete in a section of sidewalk. (1 point) kilogram milligram gram meter

"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.

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Ineed i been stuck on this question since yesterday