Exam (elaborations)
Need-to-Know ACT Math Formulas (Barrons)All the important and most forgotten formulas needed to know for the ACT.
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Pythagorean theorem a^2 + b^2 = c^2 Circumference of a circle C= (3.14)(d) 00:04 01:13 Area of a circle A=(3.14)(r^2) distance formula D=(r)(t) arithmetic sequence formula (explicit) an = a1 + (n - 1)d Sum of arithmetic sequence S = (n/2) (a1 +(a1+(n-1)d)) o...
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