Find u ? v.u = -9i + 5j, v = -14i - 7j
A. 161
B. 91
C. 126
D. -35
Answer: B
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Solve.Find the force (in lb) on the region bounded by 
y = 0, y = 8, and the y-axis, if the surface of the water is at the upper edge of the area.
A. 86,661 lb B. 1165 lb C. 67,209 lb D. 81,070 lb
Solve.A 12% salt solution is mixed with an 18% salt solution to obtain five liters of a 15% salt solution. How many liters of each solution must be added?
What will be an ideal response?
Convert to decimal notation.2.982 × 107
A. 298,200,000 B. 2,982,000 C. 29,820,000 D. 208.74
Solve the problem.You have $50,000 and wish to invest part at 10% and the rest at 6%. How much should be invested at each rate to produce the same return as if it all had been invested at 9%?
A. $37,500 at 6%, $12,500 at 10% B. $37,000 at 10%, $13,000 at 6% C. $37,000 at 6%, $13,000 at 10% D. $37,500 at 10%, $12,500 at 6%