Be more specific. Like what is it asking you to do ? I'm trying to help. :)
Answer: B. Controlled experiment
Step-by-step explanation:
This is a controlled experiment because the variables in the question are manipulated by the researcher. We are told that while one group watches television before going to sleep, the other group does not.
The controllers won't have control over the variables that were used if it was an observational study while for a survey, it has to do with collection of information regarding certain topics or happenings in order to have people's perception on the topic or area of interest.
Answer: E
Step-by-step explanation: I’d say this because if they are intersecting that means that it would most likely make a perpendicular line
Answer:
8
Step-by-step explanation:
if 14 was left after half was gone then there was 28 before half was tooken out. subtract 20 from 28 to find out how much was in the bowl first.
Answer:
5y +3
Step-by-step explanation:
3(y + 1) + 2y =
3y +3 +2y =
5y +3
