Which of the following equations would produce a parabola? Check all that apply. -5x2 + 4x - 7y + 14 = 0
0 - 2 + 6x + y2 - 8 = 0
9x2 - 12xy + 4y2 + 4x – y + 5 = 0
12x + 6y-
- 5y² + 14 = 0
2012 + 10xy - y2 + 3x - 6y + 5 = 0
rity

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

answer: he is 272195

step-by-step explanation: all you have to do is multiple 3535 and 77 and it equals 272195

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.