Find the difference.

(7x2 + x + 9) - (3x2 + 4x - 5)

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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 %