Express the sum in sigma notation.- 
+ 
- 
+ 
- 
A. 
B. 
C. 
D. 
Answer: D
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Use the method of writing each premise in symbols in order to arrive at a valid conclusion.If it's not Saturday, then Dad will shave.If Dad has whiskers, then he did not shave.If it's Saturday, then Dad will take us to the game.Therefore, ...
A. If Dad has whiskers, then he will take us to the game. B. If Dad did not shave, then he has whiskers. C. If Dad shaves, then it's not Saturday. D. If Dad takes us to the game, then he has whiskers.
Determine the measure of an interior angle of the named regular polygon.Quadrilateral
A. 135° B. 90° C. 45° D. 100°
Find the first four terms of the sequence.an = 4 ? an-1; a1 = -6
A. -24, -96, -384, -1536 B. -6, -24, -20, -16 C. 0, 4, -24, -20 D. -6, -24, -96, -384
Solve the inequality. Express your answer using interval notation. Graph the solution set.|2k + 9| + 1 > 5
A. (- 
, ?)
B. (-?, - 
] ? [- 
, ?)
C. (-?, - 
) ? (- 
, ?)
D. (- 
, - 
)