Construct a truth table for the statement.r ? ~q
A. 
B. 
C. 
D. 
Answer: C
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Find the value of d2y/dx2 at the point defined by the given value of t.x = 9t2 - 6, y = t3, t = 1
A. 
B. 
C. - 
D. - 
Find the direction angles of the vector. Round to the nearest degree, if necessary.v = 6i - 2j - 3k
A. ? = 31°, ? = 107°, ? = 115° B. ? = 41°, ? = 104°, ? = 112° C. ? = 18°, ? = 108°, ? = 223° D. ? = 83°, ? = 92°, ? = 94°
Provide an appropriate response.Interest rates on mortgages may vary from bank to bank.
A. True B. False
An engine on a test stand was operated at two fixed settings, each with an appropriate load. At the first setting, fuel consumption was 1 gal every 15 min. At the second setting, it was 1 gal every 20 min. The test took 10 h, and 37 gal of fuel were used. How long did the engine run at each setting?
A. The engine ran for 7 h at the first setting, The engine ran for 3 h at the second setting. B. The engine ran for 3 h at the first setting, The engine ran for 7 h at the second setting. C. The engine ran for 7.5 h at the first setting, The engine ran for 2.5 h at the second setting. D. The engine ran for 4 h at the first setting, The engine ran for 6 h at the second setting. E. The engine ran for 6 h at the first setting, The engine ran for 4 h at the second setting.