Use the discriminant to determine whether the quadratic equation has two unequal real solutions, a repeated real solution, or no real solution without solving the equation.x2 - 10x + 25 = 0
A. no real solution
B. two unequal real solutions
C. repeated real solution
Answer: C
Mathematics
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Given the cost function, C(x), and the revenue function, R(x), find the number of units x that must be sold to break even.C(x) = 0.8x + 320R(x) = 1.2x
A. 820 units B. 800 units C. 201 units D. 810 units
Mathematics
Solve using artificial variables.Maximizez = 3x1 + 2x2subject to:x1 + x2 = 5 4x1 + 2x2 ? 12 5x1 + 2x2 ? 16 x1 ? 0, x2 ? 0
A. Maximum is 12 for x1 = 2, x2 = 3 B. Maximum is 14 for x1 = 4, x2 = 1 C. Maximum is 13 for x1 = 3, x2 = 2 D. Maximum is 15 for x1 = 5, x2 = 0
Mathematics
Simplify. Express in terms of i.9 + 
A. 9 - 3i B. 12 + i C. 6 D. 9 + 3i
Mathematics
Evaluate the expression.
?
?
A. 6,648 B. 6,548 C. 6,553 D. 6,537 E. 6,546
Mathematics