What is the percent increase from 30 to 39

➷ Use this formula:

percentage increase/decrease = (difference/original) x 100

Substitute the values in:

percentage increase = (9/30) x 100

percentage increase = 30%

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step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1