Solve the problem.An experiment is done to compare the average fuel economy of two models of cars. Several cars of each model were tested under similar conditions. The results are in the two tables below. Which car model is better?Car XCar YFuel Economy, in mpgFuel Economy, in mpg22 21 27 24 22 18 21 2221?21?27?27?27?24?21?2422?24?18?22?21?18?21?24

A. Car X
B. Car Y

Answer: A

Mathematics

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Solve the problem.A pulsed electric voltage, V, is defined byFind ao (if it is not zero), two nonzero cosine terms (if they exist), and two nonzero sine terms (if they exist) of the Fourier series for the time-dependent voltage.

A. V(t) =  - 
B. V(t) =  - 
C. V(t) =  - 
D. V(t) =  - 

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Mathematics

Solve the problem.Without using a calculator, find the geometric mean of 4 and 9.

A. 36 B. 13 C. 6.5 D. 6 E. 5

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Mathematics

Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.log8

A. log813 - log87
B. log87 - log8
C. log4 - log47
D. log8 + log87

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Mathematics

Provide an appropriate response.Find a polynomial that represents the perimeter.

A. 22x2 + 14x + 44 B. 22x2 + 14x + 22 C. 11x2 + 7x + 22 D. 13x2 + 16x + 22

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Mathematics