The sum of two numbers is 49 and the difference between these two numbers is 9. What are these two numbers?

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

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The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %