Find the ordered triple that belongs to the set.{x, x + 4, x - 7|x = 2}
A. (-5, 2, 6)
B. (2, -5, 6)
C. (-5, 6, 2)
D. (2, 6, -5)
Answer: D
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Solve the problem.The range r of a projectile is given by 
where v is the initial velocity and ? is the angle of elevation. If r is to be 
and 
what must the angle of elevation be? Give your answer in degrees to the nearest hundredth.
A. 88.37° B. 1.63° C. 3.26° D. 2.28°
Use Gaussian elimination to solve the system of equations. x- y+ 2z= 14x+ z= 0 x+ 4y+ z= -4
A. No solution B. (0, 0, -1) C. (0, -1, 0) D. (0, -1, 1)
Find the quotient and check.
A. 
B. 
C. 
D. 
E. 
Determine whether the argument in the problem below is valid or invalid. If valid, name the type of reasoning and if invalid, determine the error in reasoning. ? All physicists are clever men. All clever men are rich. Therefore, all physicists are rich. ?
What will be an ideal response?