Solve the quadratic equation by completing the square.x2 + 10x + 15 = 0
A. {5 - 
, 5 + 
}
B. {-10 + 
}
C. {-5 - 
, -5 + 
}
D. {5 + 
}
Answer: C
Mathematics
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Convert as indicated.21 L to pints
A. 19.1 pints B. 39.7 pints C. 44.7 pints D. 50.4 pints
Mathematics
Find the domain and range of the inverse of the given function.f(x) = 3.9 - 2.25x
A. Domain: all real numbers; range: [3.9, ?) B. Domain and range: all real numbers C. Domain: all real numbers; range: (?, 3.9] D. Domain: [3.9, ?); range: all real numbers
Mathematics
Solve the problem.The cost of producing t units is C = 3t2 + 5t, and the revenue generated from sales is R = 4t2 + t. Determine the number of units to be sold in order to generate a profit.
A. t > 4 B. t > 6 C. t > 0 D. t > 5
Mathematics
Simplify the radical. Assume that all variables represent positive real numbers.
A. 
B. 18
C. 1
D. 
Mathematics