Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 8x - 5 = 0
A. {-4 ± 2
}
B. {4 ± 
}
C. {-1 ± 
}
D. {-4 ± 
}
Answer: D
Mathematics
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Provide an appropriate response.Find the mean of the test scores from a math class whose scores were: 74, 52, 61, 97, 85, 77, 74, 98, 77, 89, 74, 70.
A. 79 B. 82 C. 78 D. 77
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Evaluate the square root and approximate to two decimal places if necessary.
A. 11.00 B. 11.72 C. 11.70 D. 11.69
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Use duality to solve the problem.Minimizew = 4y1 + 4y2subject to:5y1 + 10y2 ? 100 10y1 + 20y2 ? 150 y1 ? 0, y2 ? 0
A. 60 B. 10 C. 40 D. 20
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?Sketch the graph of the following probability density function and locate the mean on the graph.
?
?
?
A. ?
?
mean: 2.012
?
B. ?
?
mean: 0.555
?
C. ?
?
mean: 1.848
?
D. ?
?
mean: 0.714
?
E. ?
?
mean: 1.6
?
Mathematics