Answer: The above described question is an EXPERIMENT.
Step-by-step explanation:
- The subjects studied were ==> 40
- The factors studied, and the number of levels for each==> 2factors were studied, each having 2 levels(desserts /no desserts and exercise/no exercise).
-The number of treatment ==> 4
-The response variable ==> Improvement in sleep ability.
Answer:
x=90º
Step-by-step explanation:
x=60+30
x=90
Answer:
options are 3 and 4
Step-by-step explanation:
The difference of squares is defined as In option 1,
It can be written as
It is the sum of squares, therefore the option 1 is incorrect.
In option 2,
The number 40 is not a complete square of any number, therefore option 2 is incorrect.
In option 3,
It can be rewritten as
It is the difference of squares, therefore option 3 is correct.
In option 4,
It can be rewritten as
It is the difference of squares, therefore option 4 is correct.
have a good Day!
