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ACT Math Formulas

QuestionAnswer
distance of travel = speed*time
midpoint = [(1st x + 2nd x)/2, (1st y+2nd y)/2]
distance between points sq root of [(x2−x1)^2+(y2−y1)^2]
Probability of outcome # of desired outcomes/ # of outcomes
Probability of both outcomes probability of outcome A * probability of outcome B
Possible Combinations number of element A * number of element B * number of element C….
Parallelogram bh
Triangle 1/2 bh
30 60 90 hypotenuse 2x
30 60 90: opp 30 x
30 60 90: opp 60 (sq root 3) * x
45 45 hypotenuse (sq root 2) * x
45 45 side x
Isosceles triangle
Created by: Carrolynne
 

 



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