We choose a number from the set {10, 11, . . . , 99} uniformly at random. Let X be the first digit of the chosen number and Z the sum of the two digits (e. g., the first digit of 12 is 1). Compute the probability mass function of X and Z, respectively. Are X and Z independent

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

move it to the other side

step-by-step explanation:

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches