1.3.1 Determine whether the given description corresponds to an observational study or an experiment In a study of 449 students with a particular disease, the subjects were given certain drugs to determine if the drugs have an effect on the disease. Does the given description correspond to an observational study or an experiment? O A. The given description corresponds to an experiment B. The given description corresponds to an observational study O C. The given description does not provide enough information to answer this question.​

answer: group b.

step-by-step explanation:

it would not be increasing by nothing that i can see probably by 25 percent that is all i can sat\y for now if i have any thing else to say i will edit this.

step-by-step explanation:

answer: n word

step-by-step explanation:

what type of people are in the hood?

what steals your tv in the dark and you cant see them?

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.