Write the complex number in polar form. Express the argument ? in degrees, with 0 ? ? ? 360°.4i
A. 4(cos 90° + i sin 90°)
B. 4(cos 180° + i sin 180°)
C. 4(cos 270° + i sin 270°)
D. 4(cos 0° + i sin 0°)
Answer: A
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?Which of the following is not true about similar polygons?
A.
?There is a constant of proportionality between each side of Polygon A and each side of Polygon B.
B.
?All interior angles add up to 180(n - 2), where n = number of sides of polygon.
C.
?All interior angles of Polygon A and congruent to all interior angles of Polygon B.
D.
?The constant of proportionality can be found by dividing just one side of Polygon A by the corresponding side of Polygon B.
E.
?All quotients of corresponding sides in the form: are equal.
Determine the symmetries of the curve.r = , ? > 0
A. No symmetry B. y-axis only C. Origin only D. x-axis only
Perform the indicated operation.3 + (-4)
A. -7 B. 7 C. 1 D. -1
Describe the transformations that produce the graph of g from the graph of f.; g(x) = -8|x|
A. Stretch horizontally by a factor of 8. Reflect it across the x-axis. B. Stretch vertically by a factor of 8. Reflect it across the y-axis. C. Stretch vertically by a factor of 8. Reflect it across the x-axis. D. Stretch horizontally by a factor of 8. Reflect it across the y-axis.