Solve for the specified variable. Assume that the constants have values for which the equation has exactly one real-number solution.x = 
, for r.
A. r = 
B. r = 
C. r = 
D. r = x + y
Answer: C
Mathematics
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Factor the polynomial using the greatest common binomial factor.x(x - 7) + 9(x - 7)
A. (x + 7)(x - 9) B. (x2 - 7x)(9x - 63) C. (x - 7)(x - 9) D. (x - 7)(x + 9)
Mathematics
Complete the table of values for the given equation.x + y = 9; 
A. 
B. 
C. 
D. 
Mathematics
Multiply and simplify.sin ? (sec ? tan ? + csc ? + cot ?)
A. 1 + 2 sin2 ? B. sin2 ? - 1 + cos ? C. sec2 ? + cos ? D. sin ? + 2 sec ?
Mathematics
Express the number in standard notation.3.403 × 10-5
A. 0.00003403 B. 0.000003403 C. -340,300 D. 0.0003403
Mathematics