Sarah correctly compares the values of the digits in 644.66. Select the comparison Sarah could have made. The value of the hundredths digit is 10 times the value of the tenths digit. The value of the ones digit is one over ten the value of the tens digit. The value of the tens digit is one over ten the value of the ones digit. The value of the hundreds digit is 100 times the value of the hundredths digit.

10

Step-by-step explanation:

664.66 is right

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional