Find all complex numbers z such that z^4 = -4.

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Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

The product of sin 30 degrees and sin 60 degrees is same as the product of