Solve the quadratic equation by completing the square.x2 - 10x + 23 = 0
A. 5 ± 
B. -10 ± 2
C. 10 ± 
D. -5 ± 
Answer: A
Mathematics
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Express in scientific notation.855,000,000,000
A. 8.55 × 1011 B. 8.55 × 1010 C. 855 × 109 D. 8.55 × 1012
Mathematics
Find the length of the curve r(t) = 2ti+t²j+1ntk, 1?t?e³.
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Mathematics
Perform the indicated operation and simplify.
+ 
A. 1
B. 
C. 
D. 
Mathematics
Given the matrices A and B, find the matrix product AB.A = 
, B = 
Find AB.
A. 
B. AB is not defined.
C. 
D. 
Mathematics