Solve the discount problem.A painting oroginally priced at $170 is on sale at 15% off. Find the sale price. Round to the nearest cent.
A. $1674.50
B. $25.50
C. $2.55
D. $144.50
Answer: D
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (4t sin t + 4cos t)i + (4t cos t - 4 sin t)j - 5k
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
Use the information below to determine the indicated set. U = {x | x ? N and x ? 12} A = {x | x ? N and 6 < x < 12} B = {x | x ? N and x is even and x < 12}(A ? B) ? A'
A. {2, 4, 6, 7, 8, 9} B. { } C. {2, 4, 6} D. {1, 2, 4, 6, 12}
Subtract in the indicated base.
A. 1435 B. 2445 C. 1445 D. 1045
Subtract the polynomials.(-5x6 + 5x8 + 4 + 6x7) - (5 + 8x7 + 7x8 + 3x6)
A. -2x8 - 2x7 - 8x6 - 1 B. 12x8 + 14x7 - 2x6 - 1 C. 12x8 + 14x7 - 2x6 + 9 D. -2x8 + 14x7 - 2x6 + 9