Perform the operation.
A. 
B. 
C. 
D. 
E. 
Answer: A
Mathematics
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Verify the identity.cos 
= -sin ?
What will be an ideal response?
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Find the graph of the linear inequality.
?
?
A. ?
B. ?
C. ?
D. ?
Mathematics
Solve.The loudness, D, in decibels of a sound of intensity I is given by D = 10 log (I/I0), where I is measured in watt/m2 and I0 = 10-12 watt/m2. What is the decibel level of a noise whose intensity is 6.19 x 10-4 watt/m2? (Round to the nearest whole number.)
A. 9 decibels B. 202 decibels C. 88 decibels D. 78 decibels
Mathematics
Divide and simplify.
A. 5x B. 6x C. 6 D. 5x2
Mathematics