Solve the problem.When 8.3 is subtracted from a number, the difference is 6.1. Find the number.
A. -14.4
B. 50.63
C. -2.2}
D. 14.4
Answer: D
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Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)1.5x + 3.1y - 2.3z + 0.6w = 2.76.1x - 0.5z - 3.4w = 0.811.5y - 2.2w = 04.0x + 3.0y - 2.1z = 9
A. {(4.3, 1.3, 4.9, 6.7)} B. {(7.9, 2.4, 9.0, 12.3)} C. {(3.6, 1.1, 4.1, 5.6)} D. {(3.2, 1.0, 3.7, 5.0)}
Graph the solution of the rational inequalities on a number line and write the solution in interval notation;.
< 0
A. (-?, ?)
B. (-?, -3)
C. (-3, 0)
D. ?
Describe the transformations that produce the graph of g from the graph of f.
; g(x) = -3|x|
A. Stretch horizontally by a factor of 3. Reflect it across the x-axis. B. Stretch horizontally by a factor of 3. Reflect it across the y-axis. C. Stretch vertically by a factor of 3. Reflect it across the y-axis. D. Stretch vertically by a factor of 3. Reflect it across the x-axis.
The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x2 + y2 - 4x = 0
A. r = 4 cos ? B. r cos2 ? = 4 sin ? C. r sin2 ? = 4 cos ? D. r = 4 sin ?