Answer:
<em>Kristen's house is 4.4 miles away from her school</em>
Step-by-step explanation:
<u>Pythagora's Theorem
</u>
In any right triangle, the square of the measure of the hypotenuse is the sum of the squares of the legs. This can be expressed with the formula:

Where
c = Hypotenuse or largest side
a,b = Legs or shorter sides
The situation described in the problem forms a right triangle shown in the image below.
Applying Pythagora's Theorem
:

Solving for x:



Kristen's house is 4.4 miles away from her school