Find .v = -2i - 6j + 2k

A.
B. 2
C. 6
D. 2


Answer: D

Mathematics

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Solve the problem.A painter can finish painting a house in 5 hours. Her assistant takes 7 hours to finish the same job. How long would it take them to complete the job if they were working together? (Round your answer to the nearest tenth, if necessary.)

A. 2.9 hr B. 4 hr C. 6 hr D. 3.4 hr

Mathematics

Simplify the expression.(-4p3q3r3)4

A. (-4)12p12q12r12 B. (-4)4p12q12r12 C. -16p7q7r7 D. (-4)4p7q7r7

Mathematics

Combine like terms whenever possible. Write the result with descending powers.7m2 - 3m2 - 3m2 - 9m2

A. Cannot be simplified B. -8m8 C. -16m D. -8m2

Mathematics

Find the probability.A box contains 3 white, 2 green, 2 red, and 1 blue marble. A marble is drawn at random and replaced and then a second marble is drawn. Find the probability that both marbles are blue.

A. 0
B.
C.
D.

Mathematics