Use a power-reducing identity to find the exact value of the expression.cos2 (75°)
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Multiply the polynomials using a special product formula. Express the answer as a single polynomial in standard form.(x + 4)3
A. x3 + 12x2 + 12x + 64 B. x3 + 12x2 + 48x + 64 C. x3 + 4x2 + 8x + 64 D. x3 + 12x2 + 8x + 64
Mathematics
Rationalize the denominator.
A. 
B. 
C. 
D. 
Mathematics
Find the payment amount p needed to amortize the given amount. Assume that a payment is made in each of the n compounding periods per year.P = $10,000; i = 6%; t = 7 yr, compounded annually
A. $1610.36 B. $2033.64 C. $1808.84 D. $1791.34
Mathematics
Solve.
(10x - 25) = 
(20x - 8)
A. {1}
B. {-7}
C. 
D. {-1}
Mathematics