Find the present value. Round to the nearest cent.To get $2000 after 7 years at 9% compounded semiannually
A. $920.05
B. $1094.07
C. $1128.54
D. $1079.95
Answer: D
Mathematics
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Use De Moivre's theorem to simplify the expression. Write the answer in a + bi form.(-
+ i)6
A. -64
B. 64 - 64i
C. 64i
D. -64
+ 64i
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Evaluate the integral which is given in cylindrical or spherical coordinates.
A. 52488?
B. 
?
C. 
?
D. 16?
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A company installs 5,000 light bulbs. The lifetimes of the lightbulbs are approximately normally distributed with a mean of 500 hours and a standard deviation of 100 hours. Find the approximate number of bulbs that can be expected to last the indicated amount of time.Between 290 hours and 540 hours
A. 1,641 B. 1,639 C. 3,185 D. 3,190
Mathematics
Write an equation for the hyperbola.
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics