Expand.(-3x2 - y)5
A. -243x10 - 405x8y - 270x6y2 - 90x4y3 - 15x2y4 - y5
B. -243x10 + 405x8y + 270x6y2 + 90x4y3 + 15x2y4 + y5
C. -243x10 + 405x8y - 270x6y2 + 90x4y3 - 15x2y4 + y5
D. -243x10 - 405x8y + 270x6y2 - 90x4y3 + 15x2y4 - y5
Answer: A
Mathematics
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A. B ? 32.8° , C ? 27.2°, c ? 33.8 m B. B ? 34.1° , C ? 25.9°, c ? 33.8 m C. B ? 32.8° , C ? 27.2°, c ? 30.4 m D. B ? 34.1° , C ? 25.9°, c ? 32.3 m
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Simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Find all solutions of the equation in the interval [0, 2?).cot 3x = 
A. 
B. 
C. 
D. 
Mathematics
Solve the number problem by finding the value of the unknown number.The difference of a number and 8 is 38 less the number.
A. -15 B. 15 C. -23 D. 23
Mathematics