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ALEKS - Formulas to Know Exam Questions and Answers

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ALEKS - Formulas to Know Exam Questions and Answers

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ALEKS - Formulas to Know Exam
Questions and Answers

slope formula - ANS-y2-y1/x2-x1 (rise/run)

midpoint formula - ANS-((x1+x2)/2, (y1+y2)/2)

distance formula - ANS-√(x2-x1)^2 + (y2-y1)^2

quadratic formula - ANS--b ± √(b² - 4ac)/2a

discriminant formula - ANS-b² - 4ac

discriminant > 0 - ANS-2 solutions

discriminant = 0 - ANS-1 solution

discriminant < 0 - ANS-no real solutions (2 complex solutions)

logarithmic form --> exponential form - ANS-log(b)x=y --> b^y=x

equation of a circle - ANS-(x-h)^2+(y-k)^2=r^2
(h,k) : center, r : radius

circle area - ANS-πr^2

circle circumference - ANS-2πr

cylinder surface area - ANS-2πr^2+2πrh

cylinder volume - ANS-πr^2h

sphere surface area - ANS-4πr^2

sphere volume - ANS-4/3πr^3

cone surface area - ANS-πrl+πr^2

cone volume - ANS-1/3πr^2h

cube surface area - ANS-6s^2

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