Numerator of a fraction that has a square root in it (but you don’t have to simplify the denominator with the square root) I always thought what you do to the top you must do to the bottom

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?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?