Substitute to find the value of the expression.A plane flies at 582 miles per hour. The time, in hours, for the plane to travel a distance of d miles is 
. How long will it take for the plane to travel 5820 miles?
A. 0.10 hr
B. 3,387,240 hr
C. 10 hr
D. 13 hr
Answer: C
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (3t cos t - 3 sin t)j + (3t sin t + 3 cos t)k
A. T = (-3 sin t)j + (3 cos t)k
B. T = (3 cos t)j - (3 sin t)k
C. T = (-sin t)j + (cos t)k
D. T = - 
(sin t)j + 
(cos t)k
Mathematics
Solve.-4.4x + 1.5 = -4.5 - 1.4x
A. x = -9 B. x = 1.4 C. x = 2 D. x = 1.7
Mathematics
Identify the pair of lines as parallel, perpendicular, or intersecting.
A. Parallel B. Intersecting C. Perpendicular
Mathematics
A simplex matrix for a standard maximization problem is given. Write the values ofallthe variables (usex1,x2,x3 ... and s1, s2, s3 ...) and of the objective functionf.
A. 
B. 
C. 
D. 
E. 
Mathematics