Find the indicated probability. A bag contains 15 balls numbered 1 through 15. What is the probability that a randomly selected ball has a number less than 20?
A. 1
B. 
C. 0
D. 
Answer: A
Mathematics
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A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 1, an+1 = 
A. 1, 
, 
, 
, 
B. 1, 
, 
, 
, 
C. 1, 
, 
, 
, 
D. 1, 
, 
, 
, 
Mathematics
Find the area of the region specified in polar coordinates.the region enclosed by the curve r = 9 cos ?
A. 27?
B. 
?
C. 
?
D. 81?
Mathematics
Determine whether the first literal expression is equal to the second literal expression.a + b, b - (-a)
A. Yes B. No
Mathematics
Factor completely. If the polynomial cannot be factored, say it is prime.x3 + 16x2 + 64x
A. x(x + 8)(x - 8) B. prime C. x(x + 8)2 D. x(x - 8)2
Mathematics