Show that the function is a solution of the wave equation.w(x, t) = ex - ct

A. No
B. Yes

Answer: B

Mathematics

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Solve the differential equation. = 

A. y = 
B. y = 21ln x + C
C. y = 
D. y = - 7ln x + C

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Mathematics

Solve the problem.For the incline shown below, how many feet in the vertical direction correspond to 7 ft in the horizontal direction?12

A. 28 ft
B. 4 ft
C.  ft
D. 3 ft

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Mathematics

Factor, if possible.10y2 + 45y - 25

A. 5(2y + 1)(y - 5) B. 5(2y - 1)(y + 5) C. (2y - 1)(5y + 25) D. (10y - 5)(y + 5)

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Mathematics

Choose the best answer.The volume of cement needed to lay a garage floor is about

A. 31 km3 B. 31 dm3 C. 31 m3 D. 31 cm3

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Mathematics