Simplify. Include the absolute value symbol if necessary.
A. 47
B. -47
C. 6.856
D. 
Answer: A
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (t2 - 8)i + (2t - 8)j + 7k
A. T = 
i + 
j; N = 
i + 
j
B. T = 
i + 
j; N = 
i - 
j
C. T = 
i - 
j; N = - 
i - 
j
D. T = 
i + 
j; N = 
i - 
j
Solve the problem.If 3 balls are drawn at random from a bag containing 3 red and 4 blue balls, what is the expected number of red balls in the sample?
A. 1.29 B. 1.39 C. 1.54 D. 0.89
Change the measurements on this scale drawing to decimals and round them to the nearest tenth of an inch. src="https://sciemce.com/media/4/ppg__tttt0618191158__f1q50g6.jpg" style="vertical-align: -17.0px;" /> in. length b is:
A. 0.3 in.
B. 0.4 in.
C. 0.1 in.
D. 0.2 in.
a 4
in. b 
in. c 
in. d 
in. e 2
Find the indefinite integral.
?
What will be an ideal response?