Janice was at the surface of a swimming pool and recorded the following two measurements, in feet, on a number line: -8, which represents the depth of water in the swimming pool +12, which represents the height of the slide at the pool Part A: What does 0 represent in this situation? (3 points) Part B: Describe the height of the slide in relation to o in the situation. (3 points) Part C: Janice held a pole in the swimming pool. The bottom of the pole was at a depth of 4 feet. How should Janice mark the level of the bottom of the pole on the number line? Explain how you determined this. (4 points)

Part A- 0 represents that there is no water in the swimming pool, and the slide is 0 feet high.

Part B- since it says '+12', then for every -8 feet of the depth of the water, it adds 12 feet to the height of the slide.

Part C- since the bottom of the pole was at a depth of 4 feet, you mark '4' on the number line or whatever you have.

:)

step-by-step explanation:

bob the banana

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: