PLEASE HELP WILL GIVE A MEDAL
Which of the following sums would be under the radical symbol to find the distance between the points (7, -1) and (-8, -9)?

A. 1^2 + 10^2
B. 1^2 + 8^2
C. 15^2 + 8^2

Question

PLEASE HELP WILL GIVE A MEDAL
Which of the following sums would be under the radical symbol to find the distance between the points (7, -1) and (-8, -9)?

A. 1^2 + 10^2
B. 1^2 + 8^2
C. 15^2 + 8^2

anonymous · Answer

the distance formula is $$d=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$$, where x1, x2, y1 and y2 are coordinates of points.

anonymous · Answer

So do I plug the numbers into the formula?

anonymous · Answer

$$7-(-8)=15$$
$$-1-(-9)=-1+9=8$$

anonymous · Answer

yes just plug in

anonymous · Answer

under the radical symbol there will be $$15^2+8^2$$, so the answer is C

anonymous · Answer

Oh, thank you so much! :)

anonymous · Answer

np :)