Convert y=0.4(x -3)squared +4 to standard form

Step-by-step explanation:

Given:

The quadratic equation in vertex form is given as:

The standard form of a quadratic equation is:

Now, in order to convert the given equation into standard form, we have to expand using the binomial expansion given by:

Here,

Therefore,

Now, plug in this expanded form into the original equation. This gives,

Now, we use distribute 0.4 inside the parenthesis. This gives,

Therefore, the standard form of the given equation is:

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