Nathaniel buys 28 gallons of gas for $56. He will put some more gas in his tank again
and spend $39. How many gallons of gas did he put in the second time? Explain how
you found the answer.

19.5 gallons

Step-by-step explanation:

Hi, to answer this question, we have to use proportions:

Nathaniel buys 28 gallons of gas for $56, so the proportion is:

$56 / 28 gallons.

For $39:

$39 / x gallons

Solving for x (number of gallons)

56/28 = 39/x

x = 39 / (56/28)

x = 19.5 gallons

Feel free to ask for more if needed or if you did not understand something.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.