Triangle efg is rotated and dilated by a scale factor other than 1 to create triangle E'F'G. Do triangle EFG and triangle E'F'G, have the same area

Can (2,3 and square root 10) be sides ona right triangle?

How do you write y-10=2 (x-8) in standard form

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22