Divide.0.21 ÷ 0.007
A. 30
B. 3
C. 0.03
D. 0.3
Answer: A
Mathematics
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (10t sin t + 10cos t)i + (10t cos t - 10 sin t)j - 10k
A. T = (-cos t)i - (sin t)j; N = (sin t)i + (cos t)j B. T = (cos t)i - (sin t)j; N = (-sin t)i - (cos t)j C. T = (-cos t)i - (sin t)j; N = (sin t)i - (cos t)j D. T = (cos t)i + (sin t)j; N = (-sin t)i + (cos t)j
Mathematics
Graph the curve over the given interval together with its tangent at the given value of x. Graph the tangent with a dashed line.y = cot(x), -2? ? x ? 2?, x = 
A. 
B. 
C. 
D. 
Mathematics
Add.97,9518,833
A. 127,468 B. 128,568 C. 129,568 D. 128,468
Mathematics
Determine whether the points A, B, C and D form a parallelogram.A(-1, 4); B(2, 7); C( 4, -1); D(7, 2)
A. Yes B. No
Mathematics