EXPLANATION
Let's see the facts:
The coordinates of the dinosaur bones are:
(x_1,y_1) = (300,100)
The coordinates of the whale bones are:
(x_2,y_2) = (300, -200)
Applying the distance equation will tell us how far apart are them:
[tex]\text{distance = }\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]Substituting terms:
[tex]\text{distance = }\sqrt[\square]{(300-300)^2+(-200-100)^2}[/tex]Adding numbers:
[tex]\text{distance = }\sqrt[]{(-300)^2}[/tex]Solving the power:
[tex]\text{distance = }\sqrt[]{90,000}[/tex]Solving the root:
[tex]dis\tan ce=300\text{miles}[/tex]The distance is 300 miles.