One person can do a certain job in ten minutes, and another person can do the same job in fifteen minutes. how many minutes will they take to do the job together? 4 min 5 min 6 min

Consider the line y = -3/-2 x +6. find the equation of the line that is perpendicular to this line and passes through the point (-9,-3). find the equation of the line that is parallel to this line and passes through the point (-9,-3).

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

What number should be added to both sides of the equation to complete this square? x^2-10x=7