Solve the problem.A building contractor finds that  can of pipe joint compound is needed to plumb each new home. How many homes can be plumbed with 18 cans of compound?

A. 7 homes
B. 45 homes
C. 18 homes
D. 22 homes

Answer: B

Mathematics

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Find Dxy.y = -2x3 tanh 

A. -6x2 tanh  + 4 sech 
B. -6x2 tanh  + 2 sech2 
C. -6x2 tanh  - 4 sech2 
D. -6x2 tanh  + 4 sech2 

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Mathematics

Use differentiation to determine whether the integral formula is correct.dx = -4 cot  + C

A. No B. Yes

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Mathematics

Multiply the complex numbers and simplify powers of i.( 5 +  i )( 5 -  i )

A. 25 + 6i B. 31 C. 61 D. 19

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Mathematics

Solve the problem.A gardener would like to keep animals out of his garden by putting up a fence. Find how much fencing is needed to enclose the garden if its dimensions are 105 feet by 109 feet.

A. 214 ft B. 856 ft C. 428 ft D. 11,445 ft

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Mathematics