Add or subtract as indicated. Write the answer in simplest form. -  + 

A.
B.
C.
D.  


Answer: D

Mathematics

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Provide an appropriate response.Suppose the velocity of a body moving along the s-axis is   = 9.8t - 8.Is it necessary to know the initial position of the body to find the body's displacement over some time interval? Justify your answer.

A. Yes, integration is not possible without knowing the initial position. B. No, the initial position is necessary to find the curve s= f(t) but not necessary to find the displacement. The initial position determines the integration constant. When finding the displacement the integration constant is subtracted out. C. No, displacement has nothing to do with the position of the body. D. Yes, knowing the initial position is the only way to find the exact positions at the beginning and end of the time interval. Those positions are needed to find the displacement.

Mathematics

The argument has a true conclusion. Identify the argument as valid or invalid.10 is a real number.10 is .

A. Valid B. Invalid

Mathematics

Solve by graphing.In one U.S. town the annual consumption y of beef (in kg per person) can be estimated by the linear equation  where x is the number of years since 1975. Graph the equation and use the graph to estimate the beef consumption in the year 1994. 

A. 16 kg per person B. 13 kg per person C. 28 kg per person D. 10 kg per person

Mathematics

Solve the problem. Round as appropriate.The volume V of a given mass of gas varies directly as the temperature T and inversely as the pressure P. If V = 170.0 in3 when T = 170° and P = 15 lb/in2, what is the volume when T = 110° and P = 10 lb/in2?

A. 135.0 in3 B. 155.0 in3 C. 165.0 in3 D. 205.0 in3

Mathematics