Solve combined variation using constant variation if x varies directly as y and z and inversly aa swuare of r, and x=12 when y=3, z=6 and r=3, find x when y=2,z=20,and r=4

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?

What is the slope of the line? a. -5/2 b.2/5 c. 5/2 d.7/2