Multiply.(2x - 5y)2
A. 2x2 - 20xy + 25y2
B. 2x2 + 25y2
C. 4x2 + 25y2
D. 4x2 - 20xy + 25y2
Answer: D
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 4(t - sin t), y= 4(1 - cos t), 0 ? t ? 4? 
A. 
B. 
C. 
D. 
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Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 8i - 4j, w = 2i - 6j
A. 35.7° B. 104.5° C. 92.0° D. 45.0°
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Determine whether the equation is an identity. If it is an identity, prove it.
+ 
= 2 csc x
What will be an ideal response?
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Subtract.- 
A. 0.8415 B. 0.7515 C. 0.7415 D. 0.7405
Mathematics