Answer:
315 = 3^2 × 5^1 × 7^1
Step-by-step explanation:
Answer:
The two numbers are 31 and 11
Step-by-step explanation:
To double-check the answer. 31 + 11 = 42, and 31-11 = 20
Answer:
Step-by-step explanation:
Manual ate 1 third of the crackers on a plate. His brother ate 1 forth of the crackers. There were 5 crackers left on the plate. How many crackers were on the plate to begin with
Answer:
B.
Step-by-step explanation:
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.