When a certain kind of bacterium takes a step, it moves 3 x 10 meters. when
joe takes a step, he moves 0.75 meters. how many times larger is joe's step
than the bacterium's step?
joe's step is
x 10
times larger than the bacterium's step.

4 + 5 7/9= 9 7/9

step-by-step explanation:

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

0.50 , 0.75

step-by-step explanation: