Which country was an ally of the united states durning world war ii

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

If angle 2=3x +1 and angle 3=2x +4what is angle 2

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 %