Perform the indicated operations.8 ? 9 - 5
A. 360
B. 67
C. 32
D. 77
Answer: B
Mathematics
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Find the x-intercepts for the parabola whose equation is given. If the x-intercepts are irrational, round your answers to the nearest tenth.y = -x2 + 9x - 20
A. x-intercepts (4, 0) and (5, 0) B. x-intercepts (4, 0) and (-5, 0) C. x-intercepts (-4, 0) and (-5, 0) D. No x-intercepts
Mathematics
Use a power-reducing identity to find the exact value of the expression.cos2 (75°)
A. 
B. 
C. 
D. 
Mathematics
Solve.Find the area of the figure.
A. 18x2 sq cm B. 81x sq cm C. 18x sq cm D. 81x2 sq cm
Mathematics
Evaluate the determinant.
A. 24x - 4 B. 4 - 24x C. 24x D. 0
Mathematics