The population of a country double every 10 years from 1950 to 1980.what was the percentage increase in population during this time

"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.

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73