Find the Jacobian of the transformation.
x = 7?sin?, y = 6?cos?
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Solve the problem.The current I, in amperes, flowing through a particular ac (alternating current) circuit at time t seconds is I = 240 sin 
What is the period of the current?
A. 
second
B. 
second
C. 25? seconds
D. 
second
Find the quotient. If the quotient is an improper fraction, express it as a mixed number.-3
÷ 
A. 1
B. 1
C. 2
D. 1
Solve the problem.The stadium vending company finds that sales of hot dogs average 37,000 hot dogs per game when the hot dogs sell for $2.50 each. For each 50 cent increase in the price, the sales per game drop by 5000 hot dogs. What price per hot dog should the vending company charge to realize the maximum revenue?
A. $1.20 B. $3.10 C. $3.70 D. $3.35
Tell whether the statement is true or false.Every rational number is an integer.
A. True B. False