What is the geometric mean of 7 and 12?
(1 point)
Responses
1 and five sevenths
Image with alt text: 1 and five sevenths
9.5
9.5
2 start root 21 end root
Image with alt text: 2 start root 21 end root
4 start root 21 end root
Image with alt text: 4 start root 21 end root