Solve the system of linear equations, using the Gauss-Jordan elimination method. If there is no solution, answer none.
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Use the sequence feature of a graphing calculator to evaluate the sum of the first 10 terms of the arithmetic sequence. Round to the nearest thousandth, if necessary.an = -
n - 
A. -143.166 B. -28.633 C. 76.834 D. 90.000
For the given parabola, give the coordinates of the vertex, the axis, the domain, and the range.y = x2 - 4x + 7
A. vertex: (3, 2); axis: y = 3; domain: [2, ?); range: (-?, ?) B. vertex: (2, 3); axis: x = 2; domain: (-?, ?); range: [3, ?) C. vertex: (-2, 3); axis: x = -2; domain: (-?, ?); range: [3, ?) D. vertex: (3, -2); axis: y = 3; domain: [-2, ?); range: (-?, ?)
Find all complex roots. Write the answer in polar form, with 0 ? ? ? 360°.Fifth roots of 1
A. cos 180° + i sin 180°, cos 36° + i sin 36°, cos 108° + i sin 108°, cos 252° + i sin 252°, cos 324° + i sin 324° B. cos 0° + i sin 0°, cos 72° + i sin 72°, cos 144° + i sin 144°, cos 216° + i sin 216°, cos 288° + i sin 288° C. cos 180° + i sin 180°, cos 72° + i sin 72°, cos 144° + i sin 144°, cos 216° + i sin 216°, cos 288° + i sin 288° D. cos 0° + i sin 0°, cos 36° + i sin 36°, cos 108° + i sin 108°, cos 252° + i sin 252°, cos 324° + i sin 324°
Simplify the expression.24 - [5 - (2 - 8)] + (4 - 6)3
A. 21 B. -21 C. 33 D. 5