Find the exact value of 
.
?
Express your answer in simplified form. Do not convert to decimal form.
What will be an ideal response?
Mathematics
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Find the center of mass of the wire that lies along the curve r and has density ?.r(t) = (6t2 - 2)i + 3tk, -1 ? t ? 1; 
A. 
B. 
C. 
D. 
Mathematics
Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.y = x2 - 3x + 4 from x = 1 to x = 5; n = 4
A. 18 B. 28 C. 48 D. 38
Mathematics
Find the unit vector that has the same direction as the vector v.v = 12i + 5j
A. u = 156i + 65j
B. u = 
i + 
j
C. u = 
i + 
j
D. u = - 
i - 
j
Mathematics
Solve.Find 293 divided by 9.
A. 37 B. 32 R 8 C. 32 D. 32 R 5
Mathematics