Solve.A projectile is thrown upward so that its distance above the ground after t seconds is 
After how many seconds does it reach its maximum height? Round to the nearest second.
A. 24 sec
B. 8 sec
C. 11 sec
D. 32 sec
Answer: C
Mathematics
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Evaluate the definite integral.
A. 162
B. 
C. 40
D. 
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Evaluate.
? 
A. 
B. 
C. 
D. 
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Write the quotient in the form a + bi.
A. 1 + 2i
B. 1 - 2i
C. 
- 
i
D. 
+ 
i
Mathematics
In business, equipment is often depreciated using the double declining-balance method. In this method, a piece of equipment with a life expectancy of N years, costing $C, will depreciate to a value of $V in n years, where n is given by the formula
?
?
If a computer that cost $42,000 has a life expectancy of 5 years and has depreciated to a value of $20,000, how old is it?
?
Please enter your answer as a number without the units, rounded to one decimal place.
Fill in the blank(s) with the appropriate word(s).
Mathematics