Factor the difference of squares.25k2 - 49m2

A. (5k + 7m)(5k - 7m) 
B. (5k + 7m)2
C. (25k + m)(k - 49m) 
D. (5k - 7m)2


Answer: A

Mathematics

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Let x represent one number and let y represent the other number. Use the given conditions to write a system of equations. Solve the system and find the numbers.The sum of seven times a first number and six times a second number is 33. If the second number is subtracted from three times the first number, the result is 7. Find the numbers.

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A. (4, -5), (5, -4) B. (-4, -5), (-5, -4) C. (4, 5), (5, 4) D. (-4, 5), (-5, 4)

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Plot the point given in polar coordinates.(-2, 45°) 

A.

B.

C.

D.

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Solve.Ashley owns 14 acres of land which she rents to a timber grower for $3179 per acre per year. Her property taxes are $872 per acre per year. How much profit does she make on the land each year?

A. $32,298 B. $43,634 C. $45,378 D. $56,714

Mathematics