Find the indicated derivative.Find fy f(x,y,z) = 2x10y10 + 6x9z4 + 10y10
A. 20x9y10 + 54x8z4
B. 20y9 + 100y9
C. 200x9y9 + 216x8z3 + 100y9
D. 20x10y9 + 100y9
Answer: D
Mathematics
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A. 67 B. 0.67 C. 6.7 D. 7.7
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What is the monthly payment on a 30-year loan of $88,400 if the annual interest rate is 10%?
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Perform the indicated operations and express your answer in the form a + bi. 
A. ±9
B. -9i
C. 9i
D. i
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