Solve. Remember to insert units when writing your answer.An automobile has a 66.5-L gas tank. Only 3.8 liters of gasoline still remain in the tank. How much gasoline is needed to fill the tank?

A. 28.5 L
B. 63.7 L
C. 72.7 L
D. 62.7 L


Answer: D

Mathematics

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Find all the first order partial derivatives for the following function.f(x, y) = 6x - 3y2 - 9

A.  = -6y;  = 6
B.  = -3;  = -6y - 9
C.  = 6x;  = -6y
D.  = 6;  = -6y

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Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = , x = 0, y = - 3, y = 3

A. ?
B. ?
C. ?
D. 6?

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Find the range for the given data set.8, 8, 8, 19, 22, 22, 22

A. 19 B. 30 C. 11 D. 14

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Find the number of terms in the sequence or the sum of the sequence as requested.How many terms are there in the sequence 5, 10, 20, 40, 80, . . ., 

A. 12 B. 11 C. 13 D. 14

Mathematics