Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.8x3y2 + 30x2y3 + 25xy4
A. y2(2x + 5y)(4x2 + 5xy)
B. prime
C. x(2xy2 + 5y3)(4x + 5y)
D. xy2(2x + 5y)(4x + 5y)
Answer: D
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The weight of an object on Earth is 6 times greater than what it is on the moon. The weight of the astronaut on the Earth is 246. What would the astronaut weigh on the moon?
A. 1,476 B. 41 C. 1,475 D. 42 E. 246
For an election with four candidates (A, B, C, and D) we have the following preference schedule:
The ranking of the candidates using the plurality-with-elimination method is
A. first: D; second: C; third: B; fourth: A. B. first: C; second: A; third: D; fourth: B. C. first: D; second: A; third: C; fourth: B. D. first: C; second: D; third: A; fourth: B. E. none of these
Add.(-4 + 8x5 + 3x7 + 7x6) + (6x6 + 2x5 + 8 + 4x7)
A. 7x7 + 13x6 + 10x5 + 4 B. 2x7 + 2x6 + 11x5 + 11 C. 30x36 + 4 D. 7x14 + 13x12 + 10x10 + 4
Solve.There are currently 61 million cars in a certain country, decreasing by 4.6% annually. How many years will it take for this country to have 43 million cars? (Round to the nearest year.)
A. 18 years B. 8 years C. 4 years D. 63 years