Use DeMoivre's Theorem to find the indicated power of the following complex number.

A. -4
B. -8
C.
D.
E. 8


Answer: B

Mathematics

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Find the requested angle.The sum of two angles of a triangle is 170°. What is the supplement of the third angle of the triangle?

A. -80° B. 170° C. 85° D. 10°

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Write the repeating decimal number as a fraction.0.1111 . . .

A.
B.
C.
D.

Mathematics

Solve. Clear decimals first.1.2y + 3.7 = 0.8y + 1.78

A. -4.848 B. -4.81 C. -4.8 D. 0.208

Mathematics

Solve the problem.An explosion causes debris to rise vertically with an initial velocity of 7 feet per second. The function  describes the height of the debris above the ground, s(t), in feet, t seconds after the explosion. What is the instantaneous velocity of the debris when it hits the ground?

A. 112 feet per second B. -224 feet per second C. -112 feet per second D. 224 feet per second

Mathematics