Evaluate the expression and write your answers as a fraction in simplest form.-1/19+(-3/19)

If ac = 12 and ab=7 is it possible that bc =10

Sara can take no more than 22 pounds of luggage on a trip.her suitcase weighs 112 ounces.how many more pounds can she pack without going over the limit?

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9