14.5.31In what direction is the derivative of f(x, y)P(9,2) equal to zero?Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A.uequalsnothing(Simplify your answer. Use a comma to separate answers as needed. Type your answer in terms of i and j.)B. There is no solution.

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.

Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?