Provide an appropriate response. Is the number 13.8 rational?
A. Yes
B. No
Answer: A
Mathematics
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Solve the problem.Suppose it cost $2.84 to fill a gas tank in 1965. How much would it cost to fill the same tank in 1975?Use the table below. 
A. $5.73 B. $7.37 C. $6.45 D. $5.16
Mathematics
Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (sin x)cos x
A. (sin x)cos x(cos x cot x - sin x ln (sin x)) B. cos x ln ( sin x) C. cos x cot x - sin x ln(sin x) D. cos x cot x - ln (sin x)
Mathematics
Multiply and simplify if possible.
A. 
B. 9
C. 3
D. 
Mathematics
Find the exact value under the given conditions.sin ? = 
, 
< ? < ?; cos ? = 
, 0 < ? < 
Find sin (? - ?).
A. - 
B. 
C. 
D. 
Mathematics