Answer: B
Step-by-step explanation:
Step-by-step explanation:
Number of revolutions made by wheel
Hence the wheel will make 4 revolutions.
Answer:
64 ways
Step-by-step explanation:
Let n = 8
The number of ways a person can take one stair = n^P1 = 8^P1
The number of ways a person can take two stairs = n^P2 = 8^P2
∴ The number of ways the person who can take one stair or two stairs at a time = 8^P1 + 8^P2 = 8 + 56 = 64 ways
Answer:
C(7,-8)
R= 8
The general formula of a circle = (x-a)+(y-b)=r²
Sampling bias occurs when some members of a population are systematically more likely to be selected in a sample than others. It is also called ascertainment bias in medical fields. Sampling bias limits the generalizability of findings because it is a threat to external validity, specifically population validity.