Solve using the elimination method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this.7x - 9y = 77x - 9y = -4
A. 
B. (7, 9)
C. (7, -4)
D. No solution
Answer: D
Mathematics
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Calculate the derivative of the function. Then find the value of the derivative as specified.f(x) = x2 + 7x - 2; f '(0)
A. f '(x) = 2x; f '(0) = 0 B. f '(x) = 2x + 7; f '(0) = 7 C. f '(x) = 2x - 2; f '(0) = - 2 D. f '(x) = x + 7; f '(0) = 7
Mathematics
Factor the sum or difference of two cubes.1000x3 + 343
A. (10x + 7)(100x2 + 70x + 49) B. (1000x - 7)(x2 + 70x + 49) C. (10x + 7)(100x2 - 70x + 49) D. (10x - 7)(100x2 + 70x + 49)
Mathematics
Write the equation of the line in the graph.
A. y = -8x
B. y = -8x + 
C. y = 2x - 8
D. y = 
x - 8
Mathematics
Use an inverse matrix to solve the given system of equations. -4x - 4y - z = -43 x - 4y + 5z = 34 4x + y + z = 37
A. (7, 7, 2) B. (-7, 2, 14) C. (7, 2, 7) D. No solution
Mathematics