The tens digit of a certain number is five more than the units digit. the sum of the digits is 9. find the number. i need to turn this in in 20 minutes

How to use order of operation in 20 divide by 4 multiply 5 = 1

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.

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