Write the number in ordinary notation.3.93 × 10-4
A. 0.00393
B. 0.0000393
C. -393,000
D. 0.000393
Answer: D
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Solve the problem.A plate shaped like an equilateral triangle 2 m on a side is placed on a vertical wall 2 m below the surface of a pool filled with water. On which plate in the figure is the force greater? Try to anticipate the answer and then compute the force on each plate. Round to three decimal places when appropriate. 
A. plate 2 plate 1: 43,748.196 N plate 2: 53,548.196 N B. plate 1 plate 1: 53,548.196 N plate 2: 43,748.196 N C. plate 2 plate 1: 21,874.098 N plate 2: 26,774.098 N D. plate 1 plate 1: 26,774.098 N plate 2: 21,874.098 N
Find the limit.
A. -? B. 0 C. ? D. -1
Use mathematical induction to prove the statement is true for all positive integers n.
+ 
+ 
+ . . . + 
= 
What will be an ideal response?
Solve the problem.A bank loaned out $65,000, part of it at the rate of 
per year and the rest at a rate of 
per year. If the interest received was $5320, how much was loaned at 
A. $34,000 B. $30,000 C. $35,000 D. $31,000