Does the ratio 15/12 and 5/4 form a proportion?

The answer is yes

Find an equation of the line perpendicular to the graph.

The green family is a family of six people. they have used 4,885.78 gallons of water so far this month. they cannot exceed 9,750.05 gallons per month during drought season. write an inequality to show how much water just one member of the family can use for the remainder of the month, assuming each family member uses the same amount of water every month.

The sum of two numbers is 86, and their difference is 20. find the two numbers