Solve the inequality.x + 
< 13
A. (0, 3) or (3, 10)
B. (0, 3) or (10, ?)
C. (-?, 0) or (10, ?)
D. (-?, 0) or (3, 10)
Answer: D
Mathematics
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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.
+ 
+ 
+ ... + 
+ ...
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Mathematics
Without using a calculator, give the exact trigonometric function value with rational denominator.sin 30°
A. 
B. 
C. 
D. 
Mathematics
Factor completely.w2 + 4w + 4 - z2
A. (w - 2 + z)(w + 2 - z) B. (w - 2 + z)(w - 2 - z) C. (-w + 4 + z)(w + 4 - z) D. (w + 2 + z)(w + 2 - z)
Mathematics
Suppose n(U) = 200, n(A) = 80, n(B) = 65, n(C) = 90, n(A ? B) = 48, n(A ? C) = 62, n(B ? C) = 45, and n(A' ? B' ? C') = 80.Find n(A ? B ? C).
A. 120 B. 40 C. 20 D. impossible to determine
Mathematics