Atriangle has vertices (-1, 2), (3, 1), and (7, 2). what is the approximate perimeter of the triangle? round your answer to the nearest hundredth.

Use the distance formula to find the length of the sides, then add them up to find the perimeter.



For points in the form of (x1, y1), (x2, y2).

(-1, 2), (3, 1)









(3, 1), (7, 2)









(7, 2), (-1, 2)









So the perimeter will be:

Do the math. she originally had 50 dollars on her gift card and she had 12 dollars left on her gift card after she finished her shopping spree. if you subtract 50 minus 12 you get thirty eight dollars as your answer. so therefore, ciara spent 38 dollars total o