Find the product.(x + 2y)3
A. x3 + 6x2y + 12xy2 + 8y3
B. x3 + 8y3
C. x3 + 2x2y + 4xy + 4xy2 + 8y2 + 8y3
D. 3(x + 2y)
Answer: A
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Write the Babylonian numeral as a Hindu-Arabic numeral.
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A. 4905
B. 4785
C. 4965
D. 1245
Determine the center, foci, and vertices of the ellipse.81x2 + 25y2 = 2025
A. center at (0, 0)
foci at (0, 9) and (5, 0)
vertices at (0, 81) and (25, 0)
B. center at (0, 0)
foci at (0, - 2
) and (0, 2
)
vertices at (0, -9), (0, 9)
C. center at (0, 0)
foci at (0, -9) and (0, 9)
vertices at (0, -81), (0, 81)
D. center at (0, 0)
foci at (- 2
, 0) and (2
, 0)
vertices at (-9, 0), (9, 0)
SD( X )
The random variable X has the probability density function
over [0, ?).
Compute the following quantities.
Use the periodic compound interest formula to solve the problem.Find the amount in a savings account at the end of 7 years if the amount originally deposited is $8000 and the interest rate is 7% compounded semiannually. Round to the nearest cent.
A. $14,244.51 B. $12,949.56 C. $10,178.23 D. $115,920.00