In 1928 what film was the first all talking feature

Lights of New York was the 1928 what film was the first all talking feature.

The scale factor from figure A to figure B is 1/2

Step-by-step explanation:

"I have added screenshot of the complete question as well as the

diagram"

- In the scaled copy of figures, the figures are similar

- In the similar figures the corresponding sides are proportion

* Look to the attached figure

∵ Figure B is a scaled copy of figure A

∴ Figure A is similar to figure B

∴ The sides of figure A is proportion with the sides of figure B

∵ The vertical side of figure A is 4 units

∵ The corresponding side in figure B is 2 units

- The sides of figure A multiplied by a scale factor to give the

  sides of figure B

∵ Figure B is smaller than figure A

∴ The scale factor is smaller than 1

∵ The scale factor from figure A to figure B = side of B/side of A

∴ The scale factor from figure A to figure B = 2/4 = 1/2

* The scale factor from figure A to figure B is 1/2