more formulas Flashcards by Gwen RICHES

Q

What does speed equal

A

distance/time

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Q

Quadratic formula

A

-b ± √b²-4ac/2a

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Q

p(event)

A

number of favourable outcomes / total outcomes

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Q

If the probabilities have or

A

add them

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Q

interior angles of polygon

A

( n -2) x 180

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Q

exterior angles

A

360/ angles

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Q

arc length =

A

angle/360 x pixdiamter

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Q

area of sector =

A

angle/360 x pi x r squared

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Q

frequency

A

area

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Q

frequency density

A

frequency/ class width

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