Factor the polynomial completely.40z6 - 26z4 - 30z2
A. 2z2(5z2 - 3)(4z2 + 5)
B. (8z3 - 10)(5z3 + 3)
C. 2z2(4z2 - 5)(5z2 + 3)
D. 2(4z4 - 5)(5z2 + 3)
Answer: C
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (4 - 2t)i + (2t - 9)j + (10 + t)k
A. T(t) = 
i - 
j - 
k
B. T(t) = - 
i + 
j + 
k
C. T(t) = 
i - 
j - 
k
D. T(t) = - 
i + 
j + 
k
Mathematics
Compute the value of the given expression.-
- 
A. 5 B. -5 C. -37 D. 37
Mathematics
Find the equation of the line that has the given properties. Write the equation in slope-intercept form, if possible. Contains (-1, -5); parallel to y = - 
x - 9
A. y = 4x + 1
B. y = 4x - 1
C. y = - 
x + 
D. y = - 
x - 
Mathematics
Solve the problem.Find the radius (to the nearest hundredth of a millimeter) of a pulley if rotating the pulley 109.38° raises the pulley 42.2 mm.
A. 21.91 mm B. 22.11 mm C. 22.01 mm D. 22.21 mm
Mathematics