For a survey, a company decided to call 7 out of every of 50 people. How many people should be called in a town of 10,000 people?

1,400 people.

Step-by-step explanation:

Divide 10,000 by 50, and you get 200. This means there are 200 groups of 50 people. If 7 people from each of those groups are called, that means you have to multiply 200 by 7, which will give you 1,400.

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

i don't see any

step-by-step explanation: