Evaluate the integral.
A. 81
B. 
C. 63
D. 
Answer: A
Mathematics
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Solve, rewrite in interval notation, and graph.-4 < 6x + 8 and 8x - 5 < 11
A. [-2, 2]
B. (-2, 2]
C. [-2, 2)
D. (-2, 2)
Mathematics
Solve the problem. Use 3.14 to approximate the value of ?. Round to nearest tenth unless instructed differently.The striking circle in field hockey is a semicircle with a radius of 15.9 yd. Find the area of the semicircle.
A. 396.9 yd2 B. 793.8 yd2 C. 99.9 yd2 D. 3175.3 yd2
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Find the x-intercepts (if any) for the graph of the quadratic function.f(x) = (x - 2)2 - 4
A. (0, 0) and (-4, 0) B. (0, 0) and (4, 0) C. (0, 0) and (-4, 0) D. (-4, 0) and (4, 0)
Mathematics
Use half-angle identities to find the exact value of the expression.sin 22.5°
A. - 
B. - 
C. 
D. 
Mathematics