formulas Flashcards
(4 cards)
1
Q
what is the formula for frequency density
A
frequency density = frequency / class width
2
Q
what is the formula for percentage change
A
percentage change = (change / original) x 100
3
Q
what is the formula for compound interest
A
compound = original x ( 1 (+) precentage as) to the power
interest (-) a decimal of time eg
years
(+) increase
(-) decrease
4
Q
what is the formula for distance
A
distance = speed x time
