Mathematics, 28.08.2019 18:30 soccer816

Solve the equation:
3 - 2/9b = 1/3b - 7

Answers: 1

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3 - $\frac{3}{9} b$ = $\frac{1}{3} b$ - 7

First, simplify $\frac{2}{9} b$ to $\frac{2b}{9}$ / Your problem should look like: 3 - $\frac{2b}{9}$ = $\frac{1}{3} b$ - 7
Second, simplify $\frac{1}{3} b$ to $\frac{b}{3}$ / Your problem should look like: 3 - $\frac{2b}{9}$ = $\frac{b}{3}$ - 7
Third, multiply both sides by 9 (the LCD of 9,3). / Your problem should look like: 27 - 2b = 3b - 63
Fourth, add 2b to both sides. / Your problem should look like: 27 = 3b - 63 + 2b
Fifth, simplify 3b - 63 + 2b to 5b - 63. / Your problem should look like: 27 = 5b - 63
Sixth, add 63 to both sides. / Your problem should look like: 27 + 63 = 5b
Seventh, simplify 27 + 63 to 90. / Your problem should look like: 90 = 5b
Eighth, divide both sides by 5. / Your problem should look like: $\frac{90}{5}$ = b
Ninth, simplify $\frac{90}{5}$ to 18. / Your problem should look like: 18 = b
Tenth, switch sides. Your problem should look like: b = 18

b = 18

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

Ibelieve it's a. 2.2 - x = -10.85 (plz tell me if it's right : ) )

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Solve the equation:
3 - 2/9b = 1/3b - 7...

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