Find the exact value of the expression.cos 
sin 
- cos 
sin 
A. 
B. 
C. 
D. 1
Answer: C
Mathematics
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Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.25x2 - 80xy + 64y2
A. (5x - 8y)(5x + 8y) B. (5x + 8y)2 C. (25x + y)(x + 64y) D. (5x - 8y)2
Mathematics
Solve the problem.The stock market gained 28 points on Tuesday and lost 42 points on Wednesday. Find the difference between these changes.
A. 14 points B. -14 points C. 70 points D. -70 points
Mathematics
Solve the three-part inequality. Write your answer in interval notation.3 < -2x + 5 ? 11
A. [-3, 1) B. (-3, 1] C. (-1, 3] D. [-1, 3)
Mathematics
Solve.x2 - 6x + 9 = 4
A. 2, -2 B. 7 C. 5, 1 D. 1, -5
Mathematics