Describe the zero vector (the additive identity) of the vector space 
.
?
A. (0, 0, 0, 0, 0)
B. (0, 0, 0, 0)
C. (0, 0, 0, 0, 0, 0)
D. (0, 0)
E. (0, 0, 0)
Answer: B
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Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 22.5°
A. - 
B. 
C. - 
D. 
The algebraic expression has been translated to a word phrase that is ambiguous (unclear). Indicate why the translation is unclear and give a translation that is not ambiguous. 3y - 7Translation: three times y minus seven
A. Mistake: could be translated as 3 - 7y Correct: three times y decreased by seven B. Mistake: could be translated as 3(y - 7) Correct: three times the difference of y and seven C. Mistake: could be translated as 3(y - 7) Correct: three times y decreased by seven D. Mistake: could be translated as 3(y - 7) Correct: seven less than three times y
Underline the digit that occupies the given place.68,487,971Millions place
A. 6
,487,971
B. 68,48
,971
C. 68,
87,971
D. 
8,487,971
Find an equation of an ellipse satisfying the given conditions.Vertices: (0, -7) and (0, 7); length of minor axis: 8
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 10