Solve the problem.If f(?) = cos ? and f(a) = 
, find the exact value of f(a) + f(a + 2?) + f(a + 4?).
A. 
B. 
C. 
D. 
+ 6?
Answer: C
Mathematics
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Evaluate using a scientific calculator. Express answer rounded to three decimal places.e-2.8
A. 0.061 B. 0.361 C. -7.611 D. -0.061
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.
- 
= 1x + y = 7
A. (3, 10), (-17, -10) B. (2, 4), (-16, 24) C. (2, 3), (-16, 25) D. (3, 4), (-17, 24)
Mathematics
Convert from one measure to the other.21 pounds to ounces
A. 
ounces
B. 294 ounces
C. 210 ounces
D. 336 ounces
Mathematics
Find the relative maximum and minimum values.
f (x, y) = 2y2 ? 3x2
Mathematics