Answer:
A
Step-by-step explanation:
Basically, this is an observational study because the researcher does not apply any treatment.
It's not an experiment because there is no experimentation involved. :)
It's not double-blind because in that case the researcher would have to apply something to two kinds of groups. one aware one the other not. not the case.
It's not D because The observations are comparing two kinds of subjects and they are not looking for a cause and effect.
Answer:
Which i think is the first one, there may just be a typing error.
Step-by-step explanation:
A polynomial of order n has the following format:
In which a is the leading coefficient, 
are the roots.
If a root appears m times, they are said to have multiplicity m.
Leading coefficient of 1 and roots 21 and 31 with multiplicity 1
So the correct answer is:
Which i think is the first one, there may just be a typing error.
Errrmmm.... Where is the expression?
Answer:
a: always, always
b. always, always
c. never, would not, never
Step-by-step explanation:
I hope this is right (i tried)
Answer:
the last choice: 4 ft, 4 ft, 10 ft
Step-by-step explanation:
prism A: 8x4x5 = 160
prism B: 4 x 4 x 10 =160
