If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (3 ln(8t))i + (2t3)j
A. a = - 
i + 12tj
B. a = 
t-2i + 12tj
C. a = 
i + 6tj
D. a = - 
t-2i + 12tj
Answer: A
Mathematics
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Solve the equation.0.4x - 0.2(40 + x) = -0.05(40)
A. {20} B. {15} C. {40} D. {30}
Mathematics
Find a Cartesian equation for the line whose polar equation is given.r cos
= 2
A. y = 
x - 2
B. y = 
x + 4
C. y = 
x - 2
D. y = x - 4
Mathematics
Find the slope-intercept form of the equation for the line shown.
A. y = - 
x + 2
B. y = 3x + 2
C. y = -3x + 2
D. y = - 
x + 3
Mathematics
Provide an appropriate response.Simplify: 
3
4
What will be an ideal response?
Mathematics