Find the dot product for the pair of vectors.6i - 2j, 8i + j

A. -10
B. 50
C. 0
D. 46


Answer: D

Mathematics

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Express the sum using summation notation. Use a lower limit of summation, not necessarily 1, and k for the index of summation.33 + 43 + 53 + . . . + 93

A.
B.
C.
D.

Mathematics

Evaluate the integral by using multiple substitutions. dx

A. (5 + cos2 (x - 5))3/2 + C
B. (5 + sin2 (x - 5))3/2 + C
C.  + C
D. (5 + sin2 x)3/2 + C

Mathematics

Find the intersection.x = -6 + 10t, y = -3 - 7t, z = 6 + 10t ; -4x + 4y - 10z = 8

A.
B. (-16, 4, -4)
C.
D. (4, -10, 16)

Mathematics

Find the slope of the line and write the slope as a rate of change. Don't forget to attach the proper units.The graph shows the total cost y (in dollars) of owning and operating a mini-van where x is the number of miles driven.

A. $4.25 per mile B. cannot be determined C. $21.00 per mile D. $0.24 per mile

Mathematics