Two lines intersect with angle ? as shown in the figure.
Find ? to the nearest degree for the two intersecting lines given by 
and 
A. 141°
B. 81°
C. 39°
D. 18°
Answer: C
Mathematics
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Find the curvature ? for the given function.r(t) = (7t + 2)i - 3j + 
k
A. ? = 7(1 + t2)3/2
B. ? = 
C. ? = 7
D. ? = 
Mathematics
Provide an appropriate response.Multiply the fractions and reduce: 
? 
A. 
B. 
C. - 
D. 
Mathematics
Write an equation of the line.
A. y = 4x
B. y = 4x - 2
C. y = -4x - 2
D. y = 
x - 2
Mathematics
Referring to triangle ABC, find the area of the triangle.
?
?
Round to three significant digits.
?
S = __________ km2
Fill in the blank(s) with the appropriate word(s).
Mathematics