Evaluate the integral.
A. 20 sin x - x cos x + C
B. 20 sin x - 20x cos x + C
C. 20 sin x - 20 cos x + C
D. 20 sin x + 20x cos x + C
Answer: B
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Provide an appropriate response.Explain why 
= 5.
What will be an ideal response?
Solve the system by using Gaussian elimination with backward substitution or by reducing the matrix to reduced-row echelon form.-4x - 5y = -19-8x = -21 + 10y
A. (21, 51) B. (-4, 51) C. No solution D. (-4, 7)
Fill in the blank with one of the words or phrases listed below. Not all choices will be used and some choices may be used more than once.
In a right triangle, each side adjacent to the right angle is called a 
.
A. leg B. quadratic equation C. hypotenuse D. triangle
Answer the question or complete the sentence to make a true statement.According to the rules for the order of operations, what should be the first step when simplifying the expression [9 + (-3 + 3)] + (-6)?
A. Find the sum of -3 and 3 B. Find the sum of 9 and -6 C. Find the sum of 3 and -6 D. Find the sum of 9 and -3