Solve the system using Gaussian elimination. -4x - 9y = 1-20x - 45y = -1
A. {(1, -1)}
B. {(5, 5)}
C. {(x, y) 
-4x - 9y = 1}
D. ?
Answer: D
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Solve the problem.The length of the ellipse x = a cos t, y = b sin t, 0 ? t ? 2? is Length = 4a
where e is the ellipse's eccentricity.Use Simpson's Rule with n = 6 to estimate the length of the ellipse when a = 2 and e = 1/3.
A. 11.8956 B. 12.1751 C. 11.2546 D. 12.2097
Find the finance charge and total installment cost of the loan. Round to the nearest cent.Amount financed: $292.00Down payment: $73.00Cash price: $365.00Number of payments: 24Amount of payment: $20.47
A. $292.00; $564.28 B. $199.28; $564.28 C. $146.00; $292.00 D. $73.00; $364.80
Match the given equation with one of the graphs.
- 
= 1
A. 
B. 
C. 
D. 
In the table, Y1 is defined as a quadratic function. Use the table to do the following: a. Determine the coordinates of the vertex of the graph. b. Determine whether the vertex is a minimum point or a maximum point. c. Find the minimum or maximum value of the function. d. Determine the range of the function.
A. a. (4, -13); b. minimum; c. -13; d. [-13, ?) B. a. (-13, 4); b. maximum; c. 4; d. (-?, 4] C. a. (4, 13); b. maximum; c. 13; d. [13, ?) D. a. (-13, 4); b. minimum; c. 4; d. [4, ?)