Average speed
figure 2 a racecar at the daytona 500 zips around the track. it
travels the first 80 kilometers in 0.4 hours. the next 114 kilometers
take 0.6 hours. the following 80 kilometers take 0.4 hours.
sep use mathematics calculate the racecar's average speed.

what’s the answer? i need i quick pls

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Dna replication or repair occurs in a cell in all of thw following situations except when