sat math formulas

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10 Terms

1
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vertex formulas (h,k)

y=a(x-h)2+k

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midpoint formula

(x1+x2)/2 , (y1+y2)/2

3
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arc length formula

2 * pi * r * angle of arc

4
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arc sector area formula

pi r2 * angle of sector

5
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quadratic formula

(-b ± √(b² - 4ac)) / (2a)

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discrimant of quadratic

b² - 4ac

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standard deviation (high vs low)

low means values are close to the mean whereas high means values are spread apart

9
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sum of solutions/zeros formula

-b/a (in a ax2+bx+c formula)

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area of right triangle

ab/2 (a and b are the legs)