Is 2 1/7 not a rational number

2 1/7 is a mixed number BUT it is also a rational number.

Turning this into a improper fraction, you'd get 15/7

15/7 = 2.14285...

Repeating decimals are rational numbers

I think the answer is yes but not 100% sure

hope this helps :3

Step-by-step explanation:

"In decimal form, rational numbers are either terminating or repeating decimals. For example, 1/7 = 0.142857, where the bar over 142857 indicates a pattern that repeats forever."

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

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.