Solve.2x + 2 + 5x = 8x + 2 - x
A. 
B. {0}
C. {7}
D. ?
Answer: D
Mathematics
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Replace the polar equation with an equivalent Cartesian equation.r2 = 36r cos ? - 6r sin ? - 9
A. (x - 18)2 + (y + 3)2 = 324 B. (x + 36)2 + (y - 6)2 = 9 C. 36x - 6y = 9 D. (x - 18)2 + (y + 3)2 = 9
Mathematics
Evaluate.C(4, 2)
A. 4 B. 1 C. 6 D. 0
Mathematics
Graph the solution of the system. 2x + 3y ? 6 x - y ? 3 y ? 2
A. 
B. 
C. 
D. 
Mathematics
Let x represent the number. Write the English phrase as an algebraic expression.Twice the sum of a number and -10.
A. 2x + (-10) B. 2+ x + (-10) C. 2x - (-10) D. 2(x + (-10))
Mathematics