Work out the length x

17.7cm  (1.d.p)

Step-by-step explanation:

First do (16 x 16) add (7.5x7.5)

That gives us 312.25 cm

Then find the square root of that

That equals 17.67059705

If you do it to one decimal place, is 17.7cm

Pleeease give brainliest, have a nice day.

Remember that the vertex form of a parabola is where is the vertex of the parabola.

Now, to find the vertex of the parabola, we are going to use the vertex formula:

For a quadratic of the form , the vertex is given by:

in other words, we find by evaluating the function at

We know form our quadratic that and , so let's use our formula to find :

Now we can evaluate our function at to find :

Now, we can rewrite our parabola in vertex form:

, , and

We can conclude that the correct answer is: y = 6(x + 1)2 – 16