For the equation, determine the constants A and B that make the equation an identity.
= 
+ 
A. A = 1, B = 
B. A = - 
, B = 
C. A = 
, B = 1
D. A = 
, B = 
Answer: D
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Provide an appropriate response.Fill in the blanks to complete the statement. For a system of 6 equations and 6 unknowns, the corresponding augmented matrix will have ? rows and ? columns.
A. 7; 6 B. 6; 7 C. 7; 7 D. 6; 6
Solve the problem.A ball is thrown vertically upward with an initial velocity of 192 feet per second. The distance in feet of the ball from the ground after t seconds is 
For what intervals of time is the ball less than 512 above the ground (after it is tossed until it returns to the ground)?
A. {x ? 4 sec < x < 8 sec} B. {x ? 0 sec < x < 4 sec and 8 sec > x > 12 sec} C. {x ? 0 sec < x < 3.5 sec and 8.5 sec > x > 12 sec} D. {x ? 0 sec < x < 5.5 sec and 6.5 sec > x > 12 sec}
Solve.An alcohol-and-water solution contains 20 liters of alcohol. That is 
of the total volume of the solution. Write and solve an equation to determine the total volume, V, of the solution.
A. 20 = 
V; 16 L
B. V = 
? 20; 16 L
C. 20 = 
V; 25 L
D. 20 = 
+ V; 25 L
Write exponential notation.(-3) ? (-3) ? (-3) ? (-3) ? (-3) ? (-3)
A. (-3)6 B. -(3)6 C. -18 D. 6(-3)