Find the distance between the points given. (-3, 2) and (9, -3) 13

The distance between two points on a graph is

Square root of [ (difference in the y-values)² + (difference in the x-values)² ] .

So for these two points, the distance between them is

square root of [ (-5)² + (12)² ] =

square root of [ 25 + 144 ]  =

square root of [ 169 ] =

13 .

Yes, the ' 13 ' you typed at the end of the question is the correct answer to it.

it about 600 mph from what i calculated

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form