Write the indicated sum in sigma notation.8 + 82 + 83 + . . . + 811
A. 
B. 8
C. 
D. 8
Answer: C
Mathematics
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Perform the indicated operation. Simplify the result if possible.35 ft 1 in. - 23 ft 11 in.
A. 12 ft 10 in. B. 11 ft 2 in. C. 12 ft 2 in. D. 58 ft 2 in.
Mathematics
Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.a = 1, c = 21
A. b = 
; b ? 4.472
B. b = 20
C. b = 
; b ? 20.976
D. b = 
; b ? 21.024
Mathematics
Graph.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Mathematics