Mathematics, 25.03.2020 05:32 carma43

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A publishing company estimates the revenue from the sale of a popular book by the rational function R(x)= where x is the number of years since publication and R(x) is the total revenue in millions of dollars. Find the total revenue at the end of the first year.

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Answer from: poppyme

220 million dollars of revenue at the end of the first year .

Step-by-step explanation:

Here we have , A publishing company estimates the revenue from the sale of a popular book by the rational function R(x)= $\frac{880x^2}{x^2+3}$ where x is the number of years since publication and R(x) is the total revenue in millions of dollars. We need to find the total revenue at the end of the first year. Let's find out:

We have function as R(x)= $\frac{880x^2}{x^2+3}$ , x is the number of years since publication and according to question value of x is 1 year , So putting value of x=1 in R(x):

⇒ $R(x) =\frac{880x^2}{x^2+3}$

⇒ $R(1) =\frac{880(1)^2}{(1)^2+3}$

⇒ $R(1) =\frac{880}{4}$

⇒ $R(1) =\frac{220(4)}{4}$

⇒ R(1) =220

Therefore , 220 million dollars of revenue at the end of the first year .

Answer from: Quest

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

ver más en -

step-by-step explanation:

Answer from: Quest

The answer would he -4,-2 because the points are just on the opposite side. since the x axis is +4 it's going to he -4 and since the y axis is -2 it stays there because whaen rotated it stays in the third quadrant
Hello! could someone with this problem?

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