Solve the system by graphing. If there is no solution or infinitely many solutions, so state.2x + y = -16 x + 6y = -30
A. (6, -4)
B. (-10, 4)
C. (-6, -4)
D. (-6, -7)
Answer: C
Mathematics
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Find the area of the shaded part of the figure if a = 16, b = 5.
?
?
A. 80 B. 160 C. 40 D. 13 E. none of these
Mathematics
Solve the problem.A region in the first quadrant is bounded above by the curve y = tanh x, below by the 
on the left by the 
and on the right by the line 
Find the volume of the solid generated by revolving the region about the x-axis.
A. ?
B. 0
C. - 
D. 2?
Mathematics
Prove: ?A ? ?B
Given: ?A is the complement of ?C
?B is the complement of ?C
 PROOF.png)
Mathematics
An arithmetic sequence is given. Find the common difference and write out the first four terms.
A. d = 
; 
, 
, 
, 
B. d = 
; 
, 
, 
, 
C. d = 
; 
, 
, 
, 
D. d = 
; 
, 
, 
, 
Mathematics