Need-to-Know ACT Math Formulas (Barrons)All the important and most forgotten formulas needed to know for the ACT
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ACT
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ACT
Need-to-Know ACT Math Formulas (Barrons)All the important and most forgotten formulas needed to know for the ACT
Pythagorean theorem Correct Answer: a^2 + b^2 = c^2
Circumference of a circle Correct Answer: C= (3.14)(d)
Area of a circle Correct Answer: A=(3.14)(r^2)
distance formula ...
need to know act math formulas barronsall the important and most forgotten formulas needed to know for the act
need to know act math formulas barrons
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Need-to-Know ACT Math Formulas (Barrons)All the
important and most forgotten formulas needed to know for
the ACT
Pythagorean theorem Correct Answer: a^2 + b^2 = c^2
Circumference of a circle Correct Answer: C= (3.14)(d)
Area of a circle Correct Answer: A=(3.14)(r^2)
distance formula Correct Answer: D=(r)(t)
arithmetic sequence formula (explicit) Correct Answer: an = a1 + (n - 1)d
Sum of arithmetic sequence Correct Answer: S = (n/2) (a1 +(a1+(n-1)d)) or S =
(n/2) (a1 + an)
Geometric sequence formula Correct Answer: an=a1(r)^n-1
Geometric Series formula Finite Correct Answer: Sn = a1 (1-r^n) / (1-r)
Combination formula Correct Answer: nCr=n!/r!(n-r)
Property of Parallelogram Correct Answer: Opposite sides are parallel and
congruent
opposite angles are congruent
consecutive angles are supplementary
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