1/2 (y+4)=(x-7)^2 how to find the vertex?

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

Which choice represents the sample space ,s for this event

Which two undefined geometric terms always describe figures with no beginning or end?