For a quadratic of the form $x^2+bx=-c$ , we complete the square by first adding
$(\dfrac{b}{2})^2$
to each side.

Here, the coefficient b is equal to 10. We take half of this—5—and square it to get 25. We add this to both sides of the equation.

FYI, this equation can easily be factored, so there's no need to complete the square.

7 0

3 years ago

Amber is 48 inches tall and her friend Lucy is 60 inches tall. In a photograph of them together, Amber is 3 inches tall. Which p

irina [24]

The answer would be the Last option (D). This because it poses the proportion of 48 in (Amber's height) / 60 in (Lucy's height) and puts it equal to the proportion of x (what is Amber's height in the photo) / 3 (what is Lucy's height in the photo. Hope this helps :)

4 0

3 years ago