Find the exact value by using a half-angle identity.cos 
A. 
B. - 
C. 
D. - 
Answer: B
Mathematics
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Use the sum-of-the-years'-digits method of depreciation. Round to the nearest dollar.Find the book value at the end of the second year for an air filtration system which cost $7800, has a life of 5 years, and an estimated scrap value of $780.
A. $4992 B. $3120 C. $4212 D. $3588
Mathematics
Without solving, determine the character of the solutions of the equation.x2 - 7x + 8 = 0
A. a repeated real solution B. two complex solutions that are conjugates of each other C. two unequal real solutions
Mathematics
A coin has Pr(T) = 
. It is tossed six times in succession.Find the probability of getting at least five tails.
What will be an ideal response?
Mathematics
Use the product rule to simplify the expression.
A. 
B. 25
C. 35
D. 5
Mathematics