the actual thickness of a machine part is 0.5 cm and it has to be measured to within a 2% error what is the largest measurement that is acceptable

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

The length of the line segment ac is 8x-9 what is the value of x