Three students were given the expression shown to simplify. Use the drop-down menus to complete the statements about whether each student's
answer is an equivalent expression. Then choose an expression that is equivalent.

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

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 %

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.