Which shows the correct substitution of the values a, b, and c from the equation 1 = - 2x + 3x2 + 1 into the quadratic
formula?
quadratic formula: x = -b/b2 - 400
2(3)
© x= ) +v6-32 - 4b)(0)
x= -1- 2) #v6-32-4123)2)
© x = ) +–232 – 433(1)
© x==3 #32-96-20)
2(3)

b

step-by-step explanation:

the word superfluous means unnecessary

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

read more on -

step-by-step explanation:

the answer i believe is 27 units.

step-by-step explanation:

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: