Use the vectors u and v to find u· (u × v).
?
?
A. 
B. 
C. 
D. 
E. 
Answer: E
Mathematics
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Solve the equation by completing the square.x2 = 7 - 8x
A. -1 ± 
B. -4 ± 
C. -4 ± 2
D. 4 + 
Mathematics
Use scientific notation to perform the computation. Leave the answer in scientific notation.
A. 1.0 × 10-3 B. 1.0 × 10-2 C. 1.0 × 10-4 D. 1.0 × 10-1
Mathematics
Adjust the problem so that the coefficient is in the proper form.70 × 10-6
A. 0.7 × 10-5 B. 7 × 10-5 C. 0.7 × 10-4 D. 7 × 10-7
Mathematics
Solve the problem.Hi-Tech UnWater begins a cable TV advertising campaign in Miami to market a new water. The percentage of the target market that buys water is estimated by the function 
t represents the number of days of the campaign. After how long will 90% of the target market have bought the water?
A. 120 days B. 90 days C. 115 days D. 3 days
Mathematics