ratio, proportion and rates of change

Pregunta	Respuesta
simplify 2.4 : 3.6	2 : 3
what does direct proportion mean	if one of the things increase if the other increases, if one doubles, the other doubles
what does inverse proportion mean	if one is halved, the other is doubles
write an equation for y being inversely proportional to the cube root of x	y = ∛x
what is the equation for % change	change / original x 100
what is the formula for compound growth and decay	amount after days/hours etc = initial amount x (multiplier)* number of days/hours etc
1 yard = _ feet 1 gallon = _pints 1 stone = _ pounds 1 pound = _ ounces 1 foot = _ inches	3, 8, 14, 16, 12
1cm = _mm 1m = _cm 1km = _ m 1kg = _ g	10, 100, 1000, 1000
1 tonne = _ kg 1 litre = _ ml 1 litre = _ cm³ 1cm³ = _ ml	1000, 1000, 1000, 1
speed =	distance / time
density =	mass / volume
pressure =	force / area

Resumen del Recurso

	Creado por lizabeth rawson hace casi 5 años