It's winter and the powder on vail mountain has never been better. you decide to measure the snowfall over a three hour period to determine the amount of snow that has fallen. the first hour you record a 5% increase in snowfall, the second hour you record a 8% increase in snowfall, and the third hour you record a 11% increase in snow fall. over the three hour period, the snow has increased to a height of 17 inches. how high was the snow on the first hour just before it started to snow? round your answers to the nearest tenth of an inch.

to figure out this answer first you begin with 17 inches where it has ended find out what 11 percent of 17 is and subtract that from 17. the answer you got from that u see what 8 percent of that is and subtract that from your first subtraction answer, and than the answer from that take 5 percent of that and subtract what 5 percent of that is from the second subtraction answer. you will end up with 13.22362, however after rounding to the nearest tenth you will get 13.2 inches from the start .

la parábola es el lugar

geométrico en el cual los puntos tienen una distancia idéntica, equidistantes,

de un punto denominado foco, f, y una recta denominada directriz

el radio vector de una

parábola es el segmento que existe entre un punto cualquiera y el foco.

por la ecuación se observa

que la parábola abre hacia la derecha, por lo cual podemos usar las siguientes fórmulas

la ecuación ordinaria de la

parábola es y^2 = 4px, donde p es la longitud desde el vértice de la parábola al

foco.

la fórmula de la directriz

es x + p = 0

resolviendo:

y^2-9x = 0

y^2 = 9x

4p = 9, entonces p = 9/4

entonces el foco tendrá la

coordenada f(9/4,0)

la directriz vendrá

expresada por

x + p = 0

x = -p

x = -9/4

el problema indica que la

ordenada es igual a 6, entonces

(6)^2=9x

x = 36/9

x = 4

entonces el punto al cual

hay que obtener la distancia será p(4,6)

calculando se tendrá: pf = 

pf = 6,25 u

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step-by-step explanation: