Simplify the expression and write the answer without negative exponents.x-9 ? x5

A. - 
B.
C. -x4
D. x4

Answer: B

Mathematics

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Find an antiderivative of the given function.8 - 3

A. x3/2 - 3
B. x3/2 - 3x
C. 8x3/2 - 3
D. 8x3/2 - 3x

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Mathematics

Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal places.[5(cos 20° + i sin 20°)][4(cos 10° + i sin 10°)]

A. 17.3205 + 10.0000i B. 0.8660 + 0.5000i C. 0.5000 + 0.8660i D. 10.0000 + 17.3205i

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Mathematics

Solve.A bag of fertilizer covers 2000 square feet of lawn. Find how many bags of fertilizer should be purchased to cover a rectangular lawn 30 feet by 160 feet.

A. 24 bags B. 3 bags C. 2 bags D. 240 bags

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Mathematics

Evaluate as instructed.Use  and  to evaluate 

A. -17 B. 60 C. -6 D. 7

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Mathematics