Find the exact value under the given conditions.Given sin u = 
, with u in quadrant I, and cos v = 
, with v in quadrant I. Find cos (u + v).
A. 
B. 
C. 
D. - 
Answer: D
Mathematics
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Solve by making a u-substitution.x4 - 33x2 + 32 = 0
A. {±1, ±
}
B. {±1, ±4
}
C. {±1, ±4
}
D. {±2, ±4}
Mathematics
Solve the problem.Under certain conditions, the power P, in watts per hour, generated by a windmill with winds blowing v miles per hour is given by P(v) = 0.015v3. Find the power generated by 16-mph winds.
A. 0.000054 watts per hr B. 4096 watts per hr C. 61.44 watts per hr D. 3.84 watts per hr
Mathematics
Rationalize the numerator.
A. 
B. 
C. 
D. 
Mathematics
Express the number in scientific notation.844.6
A. 8.446 × 102 B. 8.446 × 10-2 C. 8.446 × 10-3 D. 8.446 × 103
Mathematics