Solve by completing the square to obtain exact solutions.x2 + 8x - 9 = 0
A. 1, -9
B. -3i, 3i
C. -1, 9
D. 0, -9
Answer: A
Mathematics
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Find the point(s) at which the given function equals its average value on the given interval.f(x) = 3 - x2; [-4, 5]
A. ±
B. ±3
C. 
D. ±
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Use the figure below to answer the following question(s).
The cheapest-link tour starting with vertex A is A, B, C, D, A
A. if 2 < x < 5. B. if 1 ? x ? 8. C. if 0 < x < 2. D. if 5 < x < 8. E. regardless of the value of x.
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Express the statement as an algebraic expression.One-fifth the height , f
A. 
f
B. 
C. 5f
D. 
f
Mathematics
Find the decimal approximation for the radical. Round the answer to three decimal places.
A. -2.460 B. -2.448 C. -2.478 D. -2.469
Mathematics