Perform the indicated operation. Assume that all variables represent nonnegative real numbers.-4 + 4

A. -1020 
B. 12 
C. 12m 
D. -1020m 


Answer: B

Mathematics

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Find the sum.

A. 2915 B. 4,252,986 C. 4,250,070 D. 2917

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Convert. When necessary, round the answer to two decimal places.20 yards to feet

A. 720 B. 180 C. 240 D. 60

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Find the quotient.-7.52 ÷ -8

A. 109.4 B. 0.94 C. 9.4 D. 10.94

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Find all cube roots of the complex number. Leave answers in trigonometric form.2 + 2i

A.  cis 20°,  cis 140°,  cis 260°
B.  cis 20°,  cis 140°,  cis 260°
C.  cis 30°,  cis 150°,  cis 270°
D.  cis 20°,  cis 140°,  cis 260°

Mathematics