Find the vector projv u.v = k, u = 9i + 2j + 6k
A. 
k
B. 
i + 
j + 
k
C. 6k
D. 
i + 
j + 
k
Answer: C
Mathematics
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P(6 ? X ? 8)
The probability density function of X is f (x) = 3/ x4 over [1, ?) . Compute the following quantity.
Mathematics
Write the system of equations associated with the augmented matrix. Do not solve.
A. 
B. 
C. 
D. 
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Use the square root property to solve the equation. 5x2 = 35
A. {17.5}
B. {±
}
C. {8}
D. {±7}
Mathematics
The amounts A (in billions of dollars) donated to support higher education in the United States from 2000 through 2007 are shown in the table, where t represents the year, with t = 0 corresponding to 2000. Year, tAmount, A0 30.6 1 32.3 2 34.3 3 57.7 4 38.1 5 42.8 6 48 7 52.8 Use a graphing utility to create a scatter plot of the data.
A. ?
B. 
C. ?
D. ?
E. ?
Mathematics