If g(x, y)=x^2+y^2-4x, find the gradient vector del g(1, 2) and use it to find the tangent line to the level curve g(x, y)=1 at the point (1, 2). Sketch the level curve, the tangent line, and the gradient vector.

What value of x is in the solution set of –5x – 15 > 10 + 20x?

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml