Evaluate.-8 + 80 ÷ (-4)
A. 28
B. 18
C. -28
D. -18
Answer: C
Mathematics
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Find all the second order partial derivatives of the given function.f(x, y) = ln (x2y - x)
A. 
= 
; 
= 
; 
= 
= 
B. 
= 
; 
= - 
; 
= 
= - 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= - 
; 
= 
= - 
Mathematics
Write the series in summation notation. Use the index i and let i begin at 1 in each summation.18 + 30 + 42 + 54 + 66
A. 
B. 
C. 
D. 
Mathematics
Identify the polynomial as a monomial, binomial, trinomial, or none of these. Give its degree.11z4 + 1z3 - 3z2 + 9
A. Binomial, degree 10 B. Trinomial, degree 4 C. None, degree 4 D. Trinomial, degree 9
Mathematics
Solve.Find the discount rate when the original price is $158.00 and the amount of the discount is $61.60.
A. 2% B. 1% C. 39% D. 80%
Mathematics