Explain why the function is differentiable at the given point. f(x, y) = 2 + x ln(xy − 5), (2, 3) the partial derivatives are fx(x, y) = correct: your answer is correct. and fy(x, y) = correct: your answer is correct. , so fx(2, 3) = 6 correct: your answer is correct. and fy(2, 3) = 4 correct: your answer is correct. both fx and fy are continuous functions for xy > 3 incorrect: your answer is incorrect. and f is differentiable at (2, 3). find the linearization l(x, y) of f(x, y) at (2, 3). l(x, y) = incorrect: your answer is incorrect.

Select all expressions that are equivalent to 2(3x + 7y). question 1 options: 6x + 14y 6x + 7y 1(6x + 14y)

Submarines control how much they float or sink in the ocean by changing the volume of air and water contained in large ballast tanks. when the tanks are completely full of water, the submarine increases its overall mass and sinks down to the bottom. when the tanks are completely full of air, the submarine reduces its overall mass and floats to the surface. depending on the density of the seawater surrounding the submarine, it will pump seawater in or out of the tanks in order to achieve the same overall density as the sea water and float neutrally in the water. the volume of the submarine never changes. when the tanks are completely full of water, a submarine with a volume of 7.8\times10^3\text{ m}^37.8×10 3 m 3 7, point, 8, times, 10, start superscript, 3, end superscript, space, m, start superscript, 3, end superscript has a total mass of 8\times10^6\text{ kg}8×10 6 kg8, times, 10, start superscript, 6, end superscript, space, k, g. the density of the seawater is 10^3\text{ kg/m}^310 3 kg/m 3 10, start superscript, 3, end superscript, space, k, g, slash, m, start superscript, 3, end superscript. to make that submarine float neutrally, and neither float nor sink in the ocean, what volume of water does that submarine need to subtract from its tanks?

Suppose you have a 40 percent chance of getting a job offer from your first choice firm, a 40 percent chance of getting a job offer from your second choice firm, and a 16 percent chance of getting a job offer from both firms. what is the probability that you will get a job offer from either firm?