Is this equation x^9-5x3+6= 0 in quadratic form

No, it's not. A quadratic form is something like

They won't necessarily come in this exact form, but the important part is that there must be a constant term, and the other two terms must be powers of the variable, and one must be the square of the other.

In this case, for example, is the square of

So, for example, an equation like

is in quadratic form, because there is a constant term (18), and is the square of . You can tell this because the exponents are one the double of the other.

So, in this case, you have which is the cube of , so this equation is not in quadratic form.

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:

an = 22 + (n-1) *6

110 seats

step-by-step explanation:

an=a1+(n-1)(d)

a1 = 22   this is the first item in the sequence

d =6   this is how the sequence goes up

a)   an = 22 + (n-1) *6

b) a12 = 22 + (12-1) *6

    a12 = 22+11*6

  a12 = 22 +88

  a12 = 110