Question

D=(x2+x1)+(y2-y1) this is the formula I need number 19 Please will mark brainliest and 50 points

Answer 1

Answer:

$2\sqrt{2}$ or $\sqrt{8}$

Step-by-step explanation:

The formula is actually d= $\sqrt{(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2}}$. Now first, we have to find points A and C.

Point A is (1,2) and Point C is (-1,0).

Now we have to substitute the values in. That would make it d =$\sqrt{(-1-1)^{2} + (0-2)^{2}}$.

To simplify the parentheses, it would get to d= $\sqrt{(-2)^{2}+(-2)^{2} }$.

To simplify the exponents, it would get to d = $\sqrt{4+4}$.

To simplify the square root, it would get to d = $\sqrt{8}$.

So the answer is either $2\sqrt{2}$ or $\sqrt{8}$.

Hope this helped! If not, please let me know!

Answer 2

Answer:


2.8

Not sure if this helped but I hope so