Find the probability of the event.A bag contains 9 red marbles, 8 blue marbles, and 4 green marbles. A marble is randomly selected from the bag. What is the probability that it is blue?
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = (9t sin t + 9 cos t)i + (9 t cos t - 9 sin t)j ; -2 ? t ? 5
A. 189 B. 130.5 C. 261 D. 94.5
Mathematics
Using Green's Theorem, find the outward flux of F across the closed curve C.F = (x - y)i + (x + y)j; C is the triangle with vertices at (0, 0), (6, 0), and (0, 8)
A. 384 B. 0 C. 96 D. 48
Mathematics
Evaluate using substitution. Do not use Table 1 or CAS.
Mathematics
Decide whether the given sequence is finite or infinite.a1= 2; for 2 ? n ? 20, an= 2?an-1+ 3
A. Finite B. Infinite
Mathematics