Solve.8x + 5 = 
(6x + -4)
A. 
B. - 
C. 
D. -7
Answer: B
Mathematics
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Find the principal unit normal vector N for the curve r(t).r(t) = (3 sin t)i + (3 cos t)j + 4k
A. N(t) = (-sin t)i + (cos t)j B. N(t) = (sin t)i + (cos t)j C. N(t) = (-sin t)i - (cos t)j D. N(t) = (-cos t)i - (sin t)j
Mathematics
Write an equation of the line with the given slope, m, and y-intercept (0, b).m = 
, b = 1
A. y = 
x - 1
B. y = - 
x + 1
C. y = - 
x - 1
D. y = 
x + 1
Mathematics
Determine the constant of variation for the stated condition.z varies jointly as x and y, and z = 108 when x = 24, and y = 18.
A. k = 18
B. k = 
C. k = 4
D. k = 
Mathematics
Simplify the expression.4 sin 2x cos 2x
A. 
sin 16x
B. cos 8x
C. 2 sin 4x
D. cos 4x
Mathematics