Write a mathematical expression for the word phrase.-9 more than -7
A. -7 - (-9)
B. -7 + 9
C. 7 + 9
D. -7 + (-9)
Answer: D
Mathematics
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Assume that the sequence converges and find its limit.a1 = 8, an + 1 = 
A. -8 B. 64 C. 1 D. 8
Mathematics
Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Mathematics
Find the center and radius of the circle.x2 + y2 = 4
A. (0, 0); 4 B. (0, 2); 4 C. (0, 0); 2 D. (2, 2); 4
Mathematics
Find the integral.
A. - 
x2 cos 3x + 
x sin 3x + C
B. - 3 x2 cos 3x + 18 x sin 3x + 54 cos 3x + C
C. - 
x2 cos 3x + 
x sin 3x + 
cos 3x + C
D. 
x2 cos 3x - 
x sin 3x - 
cos 3x + C
Mathematics