Find the acute angle, in radians, between the lines.5x - 2y = -10 and 4x + 5y = 4
A. 0.2900 radians
B. 2.847 radians
C. 1.277 radians
D. 0.2942 radians
Answer: C
Mathematics
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Find the principal unit normal vector N for the curve r(t).r(t) = (t2 + 3)j + (2t - 4)k
A. N = 
j - 
k
B. N = - 
j + 
k
C. N = 
j - 
k
D. N = - 
j + 
k
Mathematics
Simplify.
A. 1
B. 35
C. 
D. 
Mathematics
Subtract the polynomials.(-7x + 11) - (13x + 3)
A. -20x + 14 B. -12x C. -20x + 8 D. 6x + 14
Mathematics
Evaluate the expression.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics