What is 3.7 repeating, as a mixed number

Step-by-step explanation:

We can rewrite 3.7 repeating as 3.7777777.....

Let x = 3.7777777....... -------(1)      [multiply 10 to both side]

10x = 37.777777...... ----------(2)     [subtract equation (1) from equation(2)]

10x - x = 37.777777 - 3.7777777

9x = 34

x =

  =

The mixed number of 3.7 repeating is

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you