Perform the operation indicated.
? 
A. 
B. 
C. 
D. 
Answer: D
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Express the sum or difference as a product.sin 
+ sin 
A. 2 cos 7x sin x
B. 2 sin 7x
C. 2 sin 
sin x
D. 2 sin 
cos x
Find the discount date and net payment date. (The net payment date is 20 days after the final discount date.)Invoice date: Nov 24Terms: 1/10 - 20x
A. Discount date: Dec 24; net payment date: Jan 13 B. Discount date: Dec 14; net payment date: Jan 3 C. Discount date: Dec 2; net payment date: Dec 22 D. Discount date: Dec 23; net payment date: Jan 13
f is a joint probability density function on D. Find 
.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Find the vertices and the foci of the given ellipse.
+ 
= 1
A. V: (0, -8), (0, 8);
F: (0, - 
) and (0, 
)
B. V: (0, 64), (49, 0);
F: (0, 8), (7, 0)
C. V: (-8, 0), (8, 0)
F: (- 
, 0), (
, 0)
D. V: (0, -64), (0, 64);
F: (0, -8), (0, 8)