Perform the indicated operation. Write the result in standard form.(5 + 9i)(3 - 9i)

A. 96 + 18i
B. -81i2 - 18i + 15
C. -66 + 72i
D. 96 - 18i


Answer: D

Mathematics

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Indicate whether the graph represents a consistent, inconsistent, or dependent system.

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Find a value of ? in [0°, 90°] that satisfies the statement. Leave answer in decimal degrees rounded to seven decimal places, if necessary.tan ? = 1.5047547

A. 33.6064283° B. 236.393572° C. 56.3935717° D. 123.606428°

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Determine whether the graph of the equation is a circle, parabola, ellipse, or hyperbola. Sketch the graph. -  = 1

A.

B.

C.

D.

Mathematics

Answer the following statement(s) true (T) or false (F)

1. A kite has all sides congruent. 2. Both pairs of opposite sides are parallel in a square. 3. Diagonals are congruent in a parallelogram. 4. Opposite angles are congruent in a rectangle. 5. Diagonals bisect each other in a parallelogram.

Mathematics