Graph the ellipse.5x2 + 25y2 = 225 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Factor the perfect square trinomial completely.25x2 - 40xy + 16y2
A. (5x - 4y)(5x + 4y) B. (5x + 4y)2 C. (5x - 4y)2 D. (25x + y)(x + 16y)
Mathematics
Use the quadratic formula to solve the equation. Simplify any radicals.(2x - 1)(x + 1) = 1
A. 
B. 
C. 
D. 
Mathematics
Determine the value or values of the variable where the expression is defined.
A. all real numbers except x = 9 B. all real numbers except x = -2, x = -3 C. all real numbers except x = 0 D. all real numbers except x = 2, x = 3
Mathematics
Determine whether the relation represents a function. If it is a function, state the domain and range.
A. function domain: {Alice, Brad, Carl} range: {snake, cat, dog} B. function domain: {snake, cat, dog} range: {Alice, Brad, Carl} C. not a function
Mathematics