Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Answer: A
Mathematics
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Determine whether the argument is valid or invalid.Michael Bolton is a hunk or Madonna cannot sing. If Madonna cannot sing, then Cigar does not win the Triple Crown. Cigar wins the Triple Crown. Therefore, Michael Bolton is not a hunk.
A. Valid B. Invalid
Mathematics
Find the center of mass of a thin plate covering the given region with the given density function.The region between the curve y = 
and the x-axis from x = 1 to x = 9, with density ?(x) = 
A. 
= 
, 
= 
B. 
= 
, 
= 1
C. 
= 5, 
= 2
D. 
= 
, 
= 24
Mathematics
Simplify.(5x + 11y)2
A. 5x2 + 121y2 B. 25x2 + 110xy + 121y2 C. 5x2 + 110xy + 121y2 D. 25x2 + 121y2
Mathematics
Provide an appropriate response.Rewrite in logarithmic form: 103 = 1,000
What will be an ideal response?
Mathematics