First of all, this is not an observational study, but an experiment, since we have two groups and one of the two groups is manipulated or treated. In an observational study the subjects are only observed.
Second, the students did not choose their groups - so we can't choose the last answer.
Therefore the correct answer is:
This is an experiment because a treatment was applied to a group.
Adjacent and hypotenuse are given so use cosine.
Cos28= 11/x
12.46 is your answer (I rounded)
Multiply each exponent inside the parentheses by the exponent on the outside:
8^(-5 x -4) / 2^(-2 x -4)
8^20 / 2^8
The answer is C
Answer:
baseball, kickball, and basketball :P
Step-by-step explanation:
Step-by-step explanation:
Given
f(x) = 2x
f(3) = 2 * 3 = 6
Hope it will help):)