Which two of the following are not characteristics of surveys? O A. Two or more treatments are compared in the study.
O B. Data are gathered during the course of the study.
O c. One or more treatment groups and a control group are included in
the study
D. The results of the study are analyzed statistically.

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

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i dont know

step-by-step explanation:

umm. i dont know