A pharmacist has 13% alcohol solution and another 18% alcohol solution. How much of each must he use to make 50 grams of a 14% alcohol solution? please help me with this, I would really apreciate it and I will give brainiest to the correct answer

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

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

What is the mean of the sum of positive single digit integers