If ris the radius of a circle and dis its diameter, which of the following is an
equivalent formula for the circumference C = 2?
A. C= r dr
B. C = 27 d
C. C = per
D. C = id

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Ihave trouble finding the nth term of a linear sequence

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box