Nick has $3.90 in quarters and dimes, and the total number of coins is 27. how many quarters and how many dimes?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212