Complete the identity.sin (4?) = ?
A. cos3 ? - 3 sin2 ? cos ?
B. 4 sin ? cos3 ? - 4 sin3 ? cos ?
C. 1 - 8 sin2 ? cos2 ?
D. 3 sin ? - 4 sin3 ?
Answer: B
Mathematics
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Write the given number in scientific notation.27.343
A. 2.7343 × 101 B. 2.7343 × 102 C. 2.7343 × 10-2 D. 2.7343 × 10-1
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Find the ordinary interest to the nearest cent.$24,470 at 5
% for 103 days
A. $385.06 B. $24,855.06 C. $381.32 D. $1,345.85
Mathematics
Solve the problem.Paul has grades of 98 and 93 on his first two tests. What must he score on his third test in order to have an average of at least 80?
A. at least 49 B. at least 96 C. at most 90 D. at most 80
Mathematics
Simplify the expression. Assume that variables represent nonzero numbers.
2
A. 
B. 
C. 
D. 
Mathematics