Use the Poisson Distribution to find the indicated probability.The number of lightning strikes in a year at the top of a particular mountain has a Poisson distribution with ? = 4.5. Find the probability that in a randomly selected year, the number of lightning strikes is 4.

A. 0.2467
B. 0.0063
C. 0.1898
D. 0.3227


Answer: C

Mathematics

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Solve the problem.Find the area between y = (x - 2)ex and the x-axis from x = 2 to x = 5.

A. 2e5 + e2 B. 2e5 C. e5 + e2 D. e5 - e2

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Factor.y2 + 10y + 21

A. (y - 3)(y - 7) B. (y + 21)(y + 1) C. (y + 3)(y + 7) D. (y - 3)(y + 7)

Mathematics

Rewrite the expression as the logarithm of a single quantity.2 log x +  log y -  log z

A. log 
B. log 
C. log 
D. log 

Mathematics

Multiply the polynomials and simplify by combining like terms.(x2 + x - 2)(x2 + x - 7) 

A. x4 + x3 + 10x2 + 9x + 14 B. x4 + 2x3 + 9x2 + 5x + 14 C. x4 + 2x3 - 8x2 - 9x + 14 D. x4 + x3 - 9x2 - 9x + 14

Mathematics