Solve the proportion.
= 
A. {36}
B. 
C. 
D. {1645}
Answer: A
Mathematics
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Find a1, d, an, n, or Sn for the arithmetic sequence, as instructed.a1 = 0.1, an = -4.9, Sn = -19.2; Find n.
A. 10 B. 13 C. 7 D. 8
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Find the vertex and axis of symmetry of the parabola.y = -2x2 - 8x - 4
A. (-2, 4); x = -2 B. (-2, -4); x = -2 C. (2, 4); x = 2 D. (0, -4); x = 0
Mathematics
Suppose 500 coins are tossed. Using the normal curve approximation to the binomial distribution, find the probability of the indicated results.More than 262 heads
A. .131 B. .142 C. .871 D. .129
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Rationalize the denominator. Assume that all variables represent positive real numbers and that the denominator is not zero.
A. 
- 
B. 
C. 
D. 
Mathematics