Express the vector as a product of its length and direction.2j + 
k
A. 
B. 
C. 
D. 
(j + k)
Answer: C
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Choose the most reasonable measurement for the situation described.Ivan measured the length of a hammer. What is the most likely measurement?
A. 31 m B. 31 mm C. 31 cm D. 31 km
The graph shows the numbers of performers who were elected to the Rock and Roll Hall of Fame from 1991 through 2008. Describe any trends in the data. From these trends, predict the number of performers elected in 2009.
A. The number of performers elected in last four years in the graph seems to be nearly steady except for the first few years therefore five performers will be elected in 2009. B. The number of performers elected in last four years in the graph seems to be nearly steady except for the first few years therefore seven performers will be elected in 2009. C. The number of performers elected in last four years in the graph seems to be nearly steady except for the first few years therefore eight performers will be elected in 2009. D. The number of performers elected in last four years in the graph seems to be nearly steady except for the first few years therefore six performers will be elected in 2009. E. The number of performers elected in last four years in the graph seems to be nearly steady except for the first few years therefore nine performers will be elected in 2009.
Simplify by combining like terms.-10y - 7x - 3x
A. -20xy B. -4x- 10y C. -10x - 4y D. -10x - 10y
Solve the problem.Find the hydrogen ion concentration of a solution whose pH is 8.3. Use the formula 
A. 2.00 × 108 B. 5.01 × 10-9 C. -0.9190781 D. 0.91907809