Solve the cubic equation using factoring and the quadratic formula.x3 + 8 = 0
A. {-2, -1 ± 
}
B. {-2, ±2i}
C. {-2, 1 ± i
}
D. {-2, 1 ± i
}
Answer: C
Mathematics
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Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.5t5 - 15t4 - 50t3
A. (5t4 + 10)(t - 5) B. 5t3(t - 2)(t + 5) C. (t - 2)(5t4 + 25) D. 5t3(t + 2)(t - 5)
Mathematics
The identity is from the book Plane and Spherical Trigonometry with Tables by Rosenbach, Whitman, and Moskovitz, and published by Ginn and Company in 1937. Verify the identity.
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What will be an ideal response?
Mathematics
Evaluate.
, for x = 81 and y = 27
A. 84 B. 36 C. 12 D. 108
Mathematics
Find the present value. Round to the nearest cent.To get $2000 after 8 years at 4% compounded semiannually
A. $1461.38 B. $1486.03 C. $543.11 D. $1456.89
Mathematics