## anonymous one year ago What is the length of stack P Q with bar on top ? Round to the nearest tenth of a unit. units http://static.k12.com/calms_media/media/1578500_1579000/1578501/1/b228a746cddf3f53e96faaa89f4d4574b415b5c0/MS_IMC-150122-130505.jpg

1. anonymous

@Data_LG2

2. anonymous

use the distance formula: $$\sf \Large PQ=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$$

3. anonymous

$$\sf Q(x_2, y_2)=(6,1)\\P(x_1,y_1)=(-3, 7)$$

4. anonymous

$\sqrt{(6-(-3)^{2}+ (1-7)^{2}}$ ? @Data_LG2

5. anonymous

yes, then evaluate it and you'll get..?

6. anonymous

$\sqrt{81+-36}$

7. anonymous

then..?

8. anonymous

just keep going, you're right :)

9. anonymous

then i would get $\sqrt{45}$ and after i find the square root of it?

10. anonymous