Find the indicated root, or state that the expression is not a real number.
A. 3
B. 12
C. -3
D. 9
Answer: A
Mathematics
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Use the appropriate formula to find the indicated figurate number.the 9th triangular number
A. T9 = 36 B. T9 = 40.5 C. T9 = 45 D. T9 = 90
Mathematics
Simplify the expression by using a sum or difference identity.sin 
cos 
+ cos 
sin 
A. 
B. 1
C. 
D. 
Mathematics
Solve the quadratic equation by completing the square.x2 + x + 3 = 0
A. 
B. 
C. 
D. 
Mathematics
Determine a window which gives a complete graph of the polynomial function.f(x) = 0.62x3 - 5x2 + 11x + 8
A. [-10, 10] by [-10, 10] B. [-30, 80] by [-8000, 4000] C. [-5, 10] by [-100, 300] D. [-10, 5] by [-300, 300]
Mathematics