Use substitution to determine whether the system of linear equations has no solutions, one solution, or infinitely many solutions.x - 4 = yy + 9 = x
A. No solutions
B. Infinitely many
C. One
Answer: A
Mathematics
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Solve the problem.Find the sum of the infinite series 1 + 9r + r2 + 9r3 + r4 + 9r5 + r6 + . . . for those values of r for which it converges.
A. 
B. 
C. 
D. 
Mathematics
Classify the system as independent, inconsistent, or dependent.x + y = 2x + y = 5
A. Dependent B. Inconsistent C. Independent
Mathematics
Factor completely.36x6 + 93x4 + 60x2
A. 3(4x4 + 5)(3x2 + 4) B. (12x3 + 15)(3x3 + 4) C. 3x2(3x2 - 4)(4x2 - 5) D. 3x2(4x2 + 5)(3x2 + 4)
Mathematics
If necessary, write the equation in the standard form ax2 + bx + c = 0. Then identify the values of a, b, and c. Do not actually solve the equation.3x2 = 14x - 21
A. a = 3, b = 14, c = -21 B. a = 3, b = -14, c = 21 C. a = 3, b = 14, c = 21 D. a = 3, b = -14, c = -21
Mathematics