Perform the indicated operation. If possible, simplify.Simplify:
A. 1 - sin x
B. cos x
C. cos2 x
D. 1 + sin x
Answer: A
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Find the indicated probability.The age distribution of students at a community college is given below. Age (years)Number of students (f)
1133?A student from the community college is selected at random. Find the probability that the student is at least 31. Round your answer to three decimal places.
A. 0.076 B. 86 C. 0.053 D. 0.924
Divide. Write the quotient in lowest terms.
÷ -3
A. - 
B. 
C. - 
D. - 
Approximate the square root to three decimal places.
A. 2.446 B. 2.449 C. 6.000 D. 2.454
If possible, solve the system of equations. Use any method. If there is not a unique solution to a system, say why.6x - 3y = -4-9y = -12 - 18x
A. (6, -3) B. Infinite number of solutions; dependent equations C. (0, 0) D. No solution; inconsistent system of equations